TEXT: 1
  WARHAMMER 40,000 RULEBOOK
  WARHAMMER 40,000 
  RULEBOOK
  Official Update Version 1.3
  Although we strive to ensure that our rules are perfect, 
  sometimes mistakes do creep in, or the intent of a rule 
  isn’t as clear as it might be. These documents collect 
  amendments to the rules and present our responses to 
  players’ frequently asked questions. As they’re updated 
  regularly, each has a version number; when changes 
  are made, the version number will be updated, and any 
  changes from the previous version will be highlighted 
  in magenta. Where a version number has a letter, 
  e.g. 1.1a, this means it has had a local update, only in 
  that language, to clarify a translation issue or other 
  minor correction.
  ERRATA
  Page 177 – Moving
  Change the second paragraph to read:
  ‘If the datasheet for a model says it can Fly, then during 
  the Movement phase it can move across models and 
  terrain as if they were not there.’
  Page 178 – Re-rolls
  Change this paragraph to read:
  ‘Some rules allow you to re-roll a dice roll, which means 
  you get to roll some or all of the dice again. If a rule 
  allows you to re-roll a result that was made by adding 
  several dice together (e.g. 2D6, 3D6, etc.) then, unless 
  otherwise stated, you must roll all of those dice again. 
  You can never re-roll a dice more than once, and re-rolls 
  happen before modifiers (if any) are applied.’
  Page 179 – Choose Unit to Shoot With 
  Change the fourth sentence to read:
  ‘Unless otherwise noted, each model in the unit attacks 
  with all of the ranged weapons it is armed with – if a 
  model in the firing unit has any weapons that can only 
  be used once per battle, you can choose whether or not 
  the model will fire that weapon.’
  Page 179 – Choose Ranged Weapons
  Change the last sentence of the first paragraph to read:
  ‘In either case, at the same time that you choose targets 
  for the shooting unit’s attacks, you must declare how you 
  will split the shooting unit’s shots; then resolve all the 
  shots against one target before moving on to the next.’
  Page 181 – Ignoring Wounds
  Add the following as a boxout on this page:
  ‘Ignoring Wounds
  Some units have abilities that allow them to ignore 
  the damage suffered each time it loses a wound (e.g. 
  Disgustingly Resilient, The Flesh is Weak and Tenacious 
  Survivor). If a model has more than one such ability, you 
  can only use one of those abilities each time the model 
  loses a wound.’
  Page 182 – Choose Targets
  Change the third sentence of the second paragraph 
  to read:
  ‘In either case, at the same time that you choose targets 
  for the unit’s close combat attacks, you must declare 
  how you will split the unit’s close combat attacks; then 
  resolve all attacks against one target before moving on 
  to the next.’
  Page 183 – Choose Melee Weapon
  Change the second sentence to read:
  ‘In addition to their other weapons, all models are 
  assumed to be equipped with a close combat weapon, 
  which has the following profile:’
  Page 183 – Close combat weapon
  Change the AP characteristic to read ‘0’.
  Page 183 – Embark
  Change the first sentence to read:
  ‘If all models in a unit end their move within 3" of a 
  friendly transport in the Movement phase, they can 
  embark within it.’
  Page 186 – The Warlord
  Change the first sentence to read:
  ‘Once you have mustered your army, nominate one of 
  your models to be your Warlord (this cannot be a model 
  with the Fortifications Battlefield Role).’
  Page 200 – Deployment
  Change this paragraph to read:
  ‘After terrain has been set up, the Defender sets up 
  three of their units wholly within their deployment zone 
  – one of these units must have the Troops Battlefield 
  Role. The Attacker then selects three of their units to 
  serve as their patrol and sets them up wholly within their 
  deployment zone – one of these units must have the 
  Troops Battlefield Role. All other units arrive later in the 
  battle using the Reserves rules (pg 194).’
  
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  WARHAMMER 40,000 RULEBOOK
  Pages 204 and 206 – Deployment
  Change the penultimate sentence to read:
  ‘The Attacker then sets up as many of their units as they 
  wish wholly within their deployment zone.’
  Page 214 – Organised Events
  Replace this boxout with the one at the end of 
  this document.
  Page 215 – Sudden Death
  Change point 2 to read:
  ‘If at the end of any turn after the first battle round, one 
  player has no models on the battlefield, the game ends 
  immediately and their opponent automatically wins a 
  crushing victory. When determining if a player has any 
  units on the battlefield, do not include any units with 
  the Flyer Battlefield Role – these units cannot operate 
  within a combat airspace indefinitely and they cannot 
  hold territory without ground support. Furthermore, do 
  not include any units with the Fortification Battlefield 
  Role unless they have a unit embarked inside – even the 
  most formidable bastion requires a garrison if it is to 
  pose a threat.’
  Pages 218, 219, 220, 221, 222, 223, 230, 231, 232, 233, 
  234, 235, 261 – Deployment
  Change ‘A player’s models must be set up within their 
  own deployment zone’ to read:
  ‘A player’s models must be set up wholly within their own 
  deployment zone.’ 
  Page 226 – Using Tactical Objectives
  Add the following to the end of the paragraph:
  ‘Unless otherwise stated, a player controls an objective 
  marker if they have more models within 3" of the centre 
  of it than their opponent.’
  Page 229 – 62, Witch Hunter
  Change the rules text to:
  ‘Score 1 victory point if at least one enemy Psyker unit 
  was destroyed during this turn.
  Page 242 – Battlefield Role Slots
  Change the last sentence of the second paragraph 
  to read:
  ‘For example, in order to take a Battalion Detachment – 
  which you can see on the facing page – you must select 
  three units with the Troops Battlefield Role, and cannot 
  include more than six Troops units in the Detachment.’
  Page 242 – Understrength Units
  Change the second paragraph to read:
  ‘If you are using Power Ratings, you must still pay the 
  Power Rating cost as if you had a minimum-sized unit, 
  even though it contains fewer models. If you are using 
  points, you only pay the points for the models you 
  actually have in an understrength unit (and any wargear 
  they are equipped with). An understrength unit still 
  takes up the appropriate slot in a Detachment. If you are 
  playing a matched play game, you can only include an 
  understrength unit in an Auxiliary Support Detachment.’
  Page 243 – Battalion Detachment, Command Benefits
  Change this Detachment’s command benefits to read 
  ‘+5 Command Points.’
  Page 243 – Brigade Detachment, Command Benefits
  Change this Detachment’s command benefits to read 
  ‘+12 Command Points.’
  Page 248 – Woods
  Change the last sentence of the first paragraph of rules 
  text to read:
  ‘Other units only receive the benefit of cover if at least 
  50% of every model is obscured from the point of view 
  of the shooting model.’
  Page 248 – Ruins
  Change the first paragraph of rules text to read:
  ‘Unless they can Fly, Vehicles, Monsters, Cavalry 
  and Bikers can only be set up or end their move on the 
  ground floor of ruins.’
  Change the third paragraph of rules text to read:
  ‘Infantry units that are entirely on or within a ruin 
  receive the benefit of cover. Other units that are entirely 
  on or within a ruin only receive the benefit of cover if at 
  least 50% of every model is obscured from the point of 
  view of the shooting model.’
  Page 249 – Craters
  Change the first paragraph of rules text to read:
  ‘Infantry units that are entirely within a crater receive 
  the benefit of cover.’
  Page 249 – Barricades
  Change the first sentence of rules text to read:
  ‘When a model targets an enemy Infantry unit that has 
  all of its models within 1" of a barricade, the target unit 
  receives the benefit of cover if the attacking model is 
  closer to the barricade than it is to the target.’
  Page 250 – Imperial Statuary
  Change the first paragraph of rules text to read:
  ‘Units within 3" of Imperial Statuary that are at least 
  25% obscured by it from the point of view of the 
  shooting model receive the benefit of cover.’
  Page 265 – Deployment
  Change the first paragraph to read:
  ‘After the battlefield has been created, the Defender 
  sets up their army wholly within their deployment zone. 
  The Attacker then sets up their army wholly within their 
  deployment zone.’
  Page 269 – Deployment
  Change the first paragraph to read:
  ‘The Defender sets up their army wholly within their 
  deployment zone. The Attacker then sets up their army 
  wholly within their deployment zone. 
  
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  WARHAMMER 40,000 RULEBOOK
  Page 271 – Deployment
  Change the penultimate sentence of the second 
  paragraph to read:
  ‘Models must be set up wholly within their own 
  deployment zone, more than 9" from the centre of 
  the battlefield.
  FAQs
  GENERAL QUESTIONS
  Q: Can I ever skip a phase, or part of a phase? For example, if 
  my army contains no Psykers, can I skip my Psychic phase?
  A: No. You must play out all of the phases in a turn, and 
  all parts of each phase. In the example you give, your 
  opponent may have rules or Stratagems that are used in 
  your Psychic phase, and so you cannot skip it.
  Q: If a unit has a Strength characteristic of ‘-’, but I need to use 
  that characteristic to resolve a rule (e.g. shooting web pistols or 
  webbers, the Death Grip Stratagem etc.) what value should I use?
  A: Substitute the unit’s Toughness characteristic for its 
  Strength characteristic for the purposes of resolving 
  such rules.
  Q: What does within 1" mean? Does it mean any distance up to 
  1", or does it mean any distance up to and including 1"?
  A: It means any distance up to and including 1". 
  Q: Can you clarify what the difference is between ‘wholly within’ 
  and ‘within’ for rules purposes?
  A: If a rule says it affects units/models that are ‘wholly 
  within’ then it only applies if the entire unit/model is 
  within. If it just says ‘within’, however, then it applies so 
  long as any part of the unit/model is within. 
  For example, units gain the benefit of cover if every 
  model in the unit is either on or within terrain. So long 
  as all the models in that unit are either on or partially 
  within the terrain, they gain the benefit of cover.
  Q: When a rule refers to the ‘nearest’ unit/model, and two are 
  equidistant, who decides which is the nearest?
  A: Unless stated otherwise, the player controlling the 
  unit that is using the rule decides. 
  For example, if a psyker manifested the Smite psychic 
  power, and two enemy units were both exactly 4" away, 
  the player controlling the psyker could choose which 
  is the ‘closest’ and hence which suffers damage from 
  the power.
  Similarly, if in your Shooting phase an enemy 
  Character and another enemy unit were both exactly 
  10" away from your firing model, you could choose 
  which is the closest before resolving the shots – so you 
  could choose to shoot the Character if you want. If two 
  enemy Characters are equidistant from a firing model 
  (and there is no other closer enemy unit) then the 
  firing model’s controller can choose which of the two 
  Characters is closest before resolving the model’s shots. 
  Note that it cannot choose for them both to be the 
  closest, so cannot split its fire between the two.
  If neither player controls the origin of the rule in 
  question (e.g. if a mission’s rules include gigantic rocks 
  that are crashing indiscriminately into the battlefield) 
  then the players should roll off. Whoever wins decides 
  which unit/model is nearest.
  Q: Can I set up a unit, or finish any sort of move with a unit, 
  so that its models form several separate groups (where each 
  group consists of models from that unit that are within 2" 
  horizontally and 6" vertically of at least one other model from 
  their group)?
  A: No. The unit must set up or finish any sort of move as 
  a single group. 
  Q: If one of my units shoots an enemy unit in which only one 
  model is visible, and I resolve the attacks one at a time, slaying 
  that model before I have resolved all of my unit’s attacks, what 
  happens to the rest of the attacks – are they wasted?
  A: No. You determine the number of attacks the firing 
  unit will make against the target unit before any of those 
  attacks are made (i.e. before any hit rolls are made). If 
  you are resolving these attacks one at a time and your 
  opponent removes the only visible model as a casualty, 
  you still continue to resolve the remainder of the firing 
  unit’s attacks against that target.
  Q: For rules that modify a weapon’s characteristic(s), if that 
  characteristic is a random value, how is the modification 
  applied? For example, if a rule increases a weapon’s Damage 
  characteristic by 1, and the weapon’s normal Damage 
  characteristic is ‘D3’, what is its modified characteristic?
  A: Any such modification is applied after the random 
  result is rolled. In the example given, the modified 
  characteristic would be D3+1. 
  Q: Can a unit fire Overwatch at a Character if, when it 
  declares its charge at them, there are other visible enemy models 
  that are closer?
  A: Yes.
  Q: Can I use the Command Re-roll Stratagem to retroactively 
  re-roll a dice? For example, if I take a Psychic test, and 
  then my opponent successfully Denies the Witch, could I use 
  the Stratagem to try and increase the result of the original 
  Psychic test?
  A: No. You must use the Stratagem as soon as you have 
  rolled your dice, before anything else occurs.
  Q: Do units that are not Infantry (Vehicles, Monsters, 
  etc.) gain the benefit of cover from woods, ruins etc. if they are at 
  least 50% obscured by that piece of terrain but are not actually 
  on or within it?
  A: No. Unless they are Infantry, such a unit must meet 
  the two following conditions to gain the benefit of cover:
  •  All of its models must be either on or within 
  the terrain.
  •  The unit must be at least 50% obscured from the point 
  of view of the firer (note that it doesn’t matter what is 
  obscuring the target, only that it is obscured).
  
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  WARHAMMER 40,000 RULEBOOK
  Q: If a rule allows me to re-roll Damage rolls of 1, and the 
  Damage characteristic for a weapon is D3, do I re-roll the D6 
  rolls of 1 and 2 (which are halved to get the D3 result) or only 
  the original D6 rolls of 1?
  A: In this case, you re-roll the D3 result (so you re-roll 
  rolls of 1 or 2 made on the D6).
  Q: Two enemy Infantry units are within 1" of each other 
  and in the same piece of terrain. Do they both receive the benefit 
  of cover against shooting attacks made with Pistols by the 
  other unit?
  A: Yes.
  Q: If my unit, which is equipped with Pistols, is within 1" of an 
  enemy unit in the Shooting phase, but the closest enemy unit to 
  some of the models in my unit is actually another enemy unit 
  (i.e. not the enemy unit that is within 1" of my unit), which 
  unit do those models shoot at?
  A: Each individual model in your unit can shoot its 
  Pistols at the closest enemy unit, whether it is the unit 
  within 1" of the firing model’s unit or not (in such 
  circumstances, the firing model can shoot the closest 
  unit even if other friendly units are within 1" of it).
  Q: In the narrative play missions that use the Reserves mission 
  rule, what happens with units such as Terminators that have 
  abilities that allow them to be set up on the battlefield mid-
  battle? Can they be set up at the end of any Movement phase, as 
  indicated by the ability, or can they only do so when they arrive 
  from Reserves?
  A: If the unit is deployed somewhere other than the 
  battlefield (for instance, in a teleportarium chamber) 
  then it is only set up on the battlefield when it arrives 
  from Reserves.
  Q: Some rules allow me to add models to a unit during the 
  battle (e.g. the Poxwalker’s Curse of the Walking Pox ability). 
  Where are those models set up?
  A: Unless otherwise stated, these new models are placed 
  anywhere that is more than 1" from any enemy model 
  and still within unit coherency of a model in its own unit 
  that was itself on the battlefield at the start of the phase 
  in which the new model was created. Note that if you 
  cannot set up a new model on the battlefield because 
  there is no room, it is simply not set up.
  Q: Is it possible to use a Stratagem from one codex to target a 
  unit from another?  
  A: Yes, so long as the unit the Stratagem is being used on 
  has the appropriate keywords (note that the Stratagems 
  in Codex: Chaos Daemons and Codex: Tyranids are specific 
  exceptions to this, as discussed in the relevant FAQs 
  and Errata).
  For example, you can use the Tide of Traitors Stratagem 
  from Codex: Chaos Space Marines on a unit of Cultists 
  from a Death Guard Detachment (from Codex: 
  Death Guard) if your army has both an Alpha Legion 
  Detachment and a Death Guard Detachment in a 
  single Battle-forged army.
  Also note that the only requirement to have access 
  to Stratagems is that you have a Detachment of the 
  appropriate Faction.
  Q: For the purposes of the Strategic Discipline matched play 
  rule, are Stratagems with identical names that appear in 
  different codexes (e.g. ‘Veterans of the Long War’, which is a 
  Stratagem in Codex: Chaos Space Marines, Codex: Death 
  Guard and Codex: Thousand Sons) considered to be the 
  same Stratagem?
  A: Yes. This means that, in matched play games, such 
  Stratagems can only be used once per phase regardless 
  of their source. For example, if you use the Veterans 
  of the Long War Stratagem from Codex: Chaos Space 
  Marines, you cannot in the same phase also use the 
  Veterans of the Long War Stratagem from either Codex: 
  Death Guard or Codex: Thousand Sons.
  Q: For the purposes of the Tactical Reserves matched play rule, 
  do units that act separately after they have been set up (e.g. Mek 
  Gunz and their Grot Crew, T’au Battlesuits and their Drones, 
  units that have the Vehicle Squadron ability, etc.) count as 
  being a single unit, or several units?
  A: Such units are a single unit for the purposes of the 
  Tactical Reserves rule. 
  Q: If both players have Stratagems or abilities that are used ‘at 
  the beginning of the first battle round but before the first turn 
  begins’ (for example, if both players use the Forward Operatives 
  Stratagem from Codex: Chaos Space Marines), who resolves 
  their abilities first?
  A: Unless the rule in question says otherwise, the players 
  roll off and, starting with the winner, alternate resolving 
  such rules one at a time.
  Q: The rules for Advancing state that you roll a dice and add 
  the result to the Move characteristic of the models in the unit 
  ‘for that Movement phase’. If, for whatever reason, I am able 
  to Advance and then move normally with a unit in the same 
  Movement phase, does the number I added to the unit’s Move 
  characteristic when it Advanced still apply when I make the 
  normal move with the unit? For example, I have a unit whose 
  Move characteristic is 6". It Advances, and I roll a 6, adding 
  that to its Move characteristic to make 12". If it moves again 
  in the same phase, its Move characteristic is still 12", so can it 
  move up to 12" when making this move?
  A: Yes. Note that a unit cannot Advance more than once 
  in the same Movement phase, so the Move characteristic 
  of a unit can only be modified once in this manner.
  Q: If a unit with a minimum Move characteristic is affected by 
  an ability which changes its Move characteristic, do I change 
  both its minimum and maximum Move characteristics?
  A: Yes. For example, an undamaged Hemlock 
  Wraithfighter has a Move characteristic of 20"-60". If 
  it was affected by the Doombolt psychic power, in the 
  following Movement phase, it’s Move characteristic 
  would be 10"-30".
  
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  WARHAMMER 40,000 RULEBOOK
  Q: If a Stratagem instructs you to select a unit from your 
  army at the start of the turn, can I choose one that is not yet 
  on the battlefield (because it was, for example, set up in a 
  teleportarium chamber during deployment)?
  A: No, unless the Stratagem specifically says otherwise.
  Q: If I set up a unit on the battlefield as reinforcements at the 
  end of my Movement phase, can I then use any Stratagems that 
  are used ‘during your Movement phase’?
  A: No, unless the Stratagem specifically says otherwise.
  Q: If you use a Stratagem to remove a model from the battlefield 
  and set it up again, does the model retain any persistent effects 
  (for example, a bonus to one of its characteristics as a result of 
  an ability)?
  A: No.
  Q: If I use a Stratagem such as Auspex Scan or Forewarned 
  to shoot with a unit ‘as if it were the Shooting phase’, does the 
  restriction on not being able to target an enemy Character 
  with a Wounds characteristic of 10 or less apply, even though 
  that Stratagem is being used in the Movement phase?
  A: Yes.
  Q: When a unit is chosen to make a charge move and fails the 
  charge, do they still count as having charged? Specifically, can 
  a unit that has failed a charge move be chosen to pile in – and 
  potentially consolidate – towards the enemy?
  A: A unit only counts as having charged if they made a 
  charge move. If a charge fails, and no models make a 
  charge move, they do not count as having charged. As 
  such, they cannot be chosen to fight in the Fight phase 
  (and so cannot pile in or consolidate) unless an enemy 
  unit moves within 1" of them.
  Q: Can you perform Heroic Interventions in your opponent’s 
  charge phase even if they did not declare any charges 
  that phase?
  A: Yes.
  Q: Can you ever perform a Heroic Intervention during your 
  own turn?
  A: No.
  Q: If a unit declares a charge against an enemy unit that is 
  entirely on the upper level of a terrain feature such as a ruin, 
  Sector Mechanicus structure, etc., but it cannot physically end 
  its charge move within 1" of any models from that unit (either 
  because there is not enough room to place the charging unit, or 
  because the charging unit is unable to end its move on the upper 
  levels of that terrain feature because of the expanded terrain 
  rules for it – as with ruins, for example), does that charge fail?
  A: Yes.
  REINFORCEMENTS
  Q: If a rule creates a new unit during the battle in a matched 
  play game and adds them to my army, must I pay for the unit 
  with my reinforcement points? 
  A: Yes (unless the rule itself says otherwise). If you don’t 
  have enough reinforcement points, you cannot add that 
  unit to your army.
  Q: What about rules that transform one model into another 
  model – such as turning an enemy Character into a Chaos 
  Spawn; do I still need to pay reinforcement points to add the 
  Chaos Spawn to my army?
  A: Again, yes (unless the rule itself says otherwise).
  Q: What about rules that add models to existing units; do I 
  need to pay reinforcement points for those models?
  A: No (unless the rule itself says otherwise or adding the 
  models would take the unit above its starting size).
  The rules for reinforcements say that when a unit is set up on 
  the battlefield as reinforcements, it cannot move or Advance 
  further that turn, but can otherwise act normally (shoot, 
  charge, etc.).
  Q: Can such a unit make a charge move? Can it pile in 
  and consolidate?
  A: Yes to both questions – the unit can declare a charge 
  and make a charge move, and if it is chosen to fight, it 
  can pile in and consolidate.
  Q: Can such a unit move or Advance for any other reason 
  e.g. because of an ability such as The Swarmlord’s Hive 
  Commander ability, or because of a psychic power such as 
  Warptime from the Dark Hereticus discipline, or because 
  of a Stratagem like Metabolic Overdrive from Codex: 
  Tyranids, etc.?
  A: No.
  Some rules – such as Early Warning Override in Codex: T’au 
  Empire, the Ever Vigilant Stratagem in Codex: Adeptus 
  Custodes, and the Auspex Scan Stratagem in Codex: Space 
  Marines – allow units to shoot at enemy units that have just 
  arrived on the battlefield as reinforcements, as if it were the 
  Shooting phase.
  Q: If the unit arriving as reinforcements is a Character, 
  can the firing unit shoot at it even if it is not the closest 
  enemy unit?
  A: No – unless the firing unit is using a weapon that 
  allows them to target a Character even if it is not the 
  closest enemy unit. This takes place ‘as if it were the 
  Shooting phase’, so all the normal restrictions of the 
  Shooting phase still apply.
  Q: If the unit arriving as reinforcements has another unit 
  embarked inside it which must disembark after it has been 
  set up (such as units embarked within a Drop Pod, or 
  a Tyrannocyte), can the firing unit shoot at the unit as 
  it disembarks?
  A: No – though the unit can shoot at the Drop Pod/
  Tyrannocyte before the units inside disembark.
  TRANSPORTS
  Q: Where Detachments say that you may include 1 Dedicated 
  Transport for each other choice, what does that mean?
  A: It means that for each unit you include in the 
  Detachment that does not have the Dedicated 
  Transport Battlefield Role, you can include one 
  Dedicated Transport.
  
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  WARHAMMER 40,000 RULEBOOK
  Q: How do transports work with regards to disembarking units 
  upon the transport’s destruction? 
  A: Disembarking from a destroyed transport operates 
  as follows:
  1.  If the transport has the Explodes ability (or equivalent) 
  roll to see if it explodes and resolve any resulting 
  damage to nearby units.*
  2.  All models inside immediately disembark following the 
  standard rules for disembarkation.
  3.  Roll a number of D6 equal to the number of models 
  disembarked in this fashion.
  4.  Each result of a 1 yields a slain model, and must be 
  allocated to one of the models which disembarked; the 
  controlling player may choose which model.
  5. Remove the destroyed transport model.
  *  Note that if the transport does explode, units being 
  transported are not affected as they are not yet on 
  the battlefield.
  For example, a Razorback is transporting a Tactical Squad 
  of five models and one Space Marine Captain when it is 
  destroyed. The Razorback rolls a 6 for its Explodes ability, 
  inflicting D3 mortal wounds on each unit within 6". The 
  six models inside now disembark, and six D6 are rolled. 
  Two of the results are a 1, so two models are slain – the 
  Space Marine player chooses two of the Space Marines 
  from the Tactical Squad. The Razorback model is now 
  removed from the battlefield. 
  Q: The Tactical Reserves matched play rule states that at least 
  half the total number of units in my army must be set up on the 
  battlefield during Deployment. If I have units embarked in a 
  transport, do they count against the number of units I have to set 
  up during Deployment? If, for example, I have a Valkyrie with 
  three units embarked inside it that will arrive on the battlefield 
  during the game, how many other units do I need to set up 
  during Deployment to satisfy the Tactical Reserves rule?
  A: Yes, embarked units count as units in your army, so 
  must be counted when referring to this rule. If you have 
  three units embarked inside a transport that will arrive 
  during the game, you need to set up at least four other 
  units on the battlefield during Deployment – equivalently, 
  if you set up three units in a transport on the battlefield, 
  you could set up four other units to arrive during 
  the game.
  Q: If a transport moves, do any models embarked inside it count 
  as also having moved?
  A: Yes.
  Q: If a transport with the Open-topped ability (e.g. a Trukk) is 
  within range of an aura ability, are units that are embarked upon 
  that transport affected by that ability? 
  A: No.
  Q: Can units embark inside a transport in a phase other than the 
  Movement phase, such as when they are using the Fire and Fade 
  Stratagem from Codex: Craftworlds, or when a unit performs a 
  Soulburst action to move again?
  A: No, unless the rule in question specifically states that 
  the unit can embark inside a Transport.
  UNIT AND WEAPON ABILITIES
  Q: If I have a weapon that can target enemy units that are not 
  visible to the firer (such as a mortar), can I shoot at an enemy 
  Character that has a Wounds characteristic of less than 10 if 
  it is not the closest enemy model?
  A: No.
  Q: Lots of aura abilities say they grant an ability to nearby 
  units that are within range of any such models. Are the bonuses 
  cumulative (i.e. if I am within range of two models with identical 
  aura abilities, is the bonus doubled)?
  A: Unless stated otherwise, no. The bonus for such an 
  ability applies once if any (i.e. one or more) of these 
  models are within range.
  Q: Can abilities that are used ‘instead of shooting’, such as 
  Smoke Launchers, be used if the model using them has Fallen 
  Back, Advanced or has enemy models within 1" of it?
  A: Yes. A model can use such an ability so long as it does 
  not shoot – it does not matter whether this is because the 
  model cannot shoot or it chooses not to.
  Q: Some Characters have aura abilities, such as a 
  Commissar’s Aura of Discipline or a Chaplain’s Spiritual Leader, 
  that allow nearby friendly units to use the character’s Leadership 
  characteristic instead of their own. There are also lots of abilities 
  that modify Leadership characteristics. Could you explain 
  how these rules interact and in what order I should apply the  
  substitution and any modifications?
  A: You modify the Leadership characteristic first, 
  then you use the character’s Leadership characteristic 
  instead (this means that the modification will not affect 
  the unit unless the character’s Leadership has also 
  been modified).
  Q: If both players have units with abilities that allow them to be 
  set up during deployment ‘after both armies are fully deployed’ 
  (e.g. Ratlings’ Find the Best Spot), which player deploys their 
  units first?
  A: The players should roll off and, starting with the 
  winner, they should alternate setting up such units.
  Q: A number of abilities allow a unit to arrive during the battle 
  and be set up more than 9" from any enemy models. If I use such 
  an ability to set up as close as allowed towards an enemy unit 
  and then select it as the target of the charge, what is the minimum 
  charge distance I need to roll to make a successful charge 
  (assuming no modifiers)?
  A: 9.
  
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  WARHAMMER 40,000 RULEBOOK
  Q: If a unit uses a rule that removes them from the battlefield and 
  then sets them up again, such as the Teleport Homer ability or 
  the Gate of Infinity psychic power, does that unit count as having 
  moved for the purposes of moving and firing Heavy weapons? 
  A: Yes.
  Q: If a unit starts its Movement phase within 1" of an enemy, 
  can it use a rule that removes them from the battlefield and then 
  sets them up again, such as the Teleport Homer ability or the 
  Gate of Infinity psychic power?
  A: Yes.
  Q: If a unit starts its Movement phase within 1" of an enemy 
  unit but elects to remain stationary, but subsequently uses a rule 
  that removes them from the battlefield and then sets them up 
  again, such as the Teleport Homer ability or the Gate of Infinity 
  psychic power, is it considered to have Fallen Back this turn?
  A: No.
  Q: If a weapon such as a rail rifle has an ability that can inflict 
  a mortal wound on the target in addition to the normal damage, 
  but the ‘normal damage’ is subsequently saved, does the target 
  still suffer the mortal wound?
  A: Yes. Note that if the ‘normal damage’ was not saved, 
  the wound would be allocated on the target unit first (and 
  any resulting damage inflicted) before the mortal wound 
  was inflicted.
  Q: Some abilities and Stratagems confer extra bonuses each time 
  a hit roll of, for example, 6+ is rolled. If a weapon has an ability 
  that says ‘this weapon automatically hits its target’, do I still roll 
  the hit rolls for those attacks in the hope of gaining such a bonus? 
  A: No, no hit rolls are made when resolving attacks with 
  such weapons (and so they will never benefit from such 
  a bonus).
  Q: If a rule states that you can choose a unit to ‘fight again’, 
  what does this mean exactly?
  A: Repeat the entire Fight phase for that unit – i.e., 
  choose to fight with the unit, pile in with that unit, choose 
  its target, choose its melee weapon, resolve its close 
  combat attacks, then consolidate with it.
  Q: If a unit has an ability that allows it to fight twice in the Fight 
  phase (e.g. Berzerkers), at what point during the Fight phase do 
  they fight for the second time? 
  A: Treat each time the unit is able to fight as a separate 
  unit selected to fight for all purposes. 
  So, if such a unit charged this turn, it will fight both 
  times before any units that did not charge. If the unit 
  did not charge this turn, then, after all units that did 
  charge have fought, you can select this unit to fight with, 
  then your opponent can select a unit to fight with, then 
  you can select your unit to fight with for the second 
  time (you need not consecutively use both of the unit’s 
  opportunities to fight – unless of course there are no 
  other eligible units to select to fight with). 
  Note that any rule that interrupts the normal sequence of 
  who fights first (such as the Counter-Offensive Stratagem, 
  or the Slaanesh Daemon Quicksilver Reflexes ability) 
  may be used to fight in between the unit’s first and 
  second ‘fight’. 
  Q: If a unit that can fight twice in the Fight phase charges 
  one enemy unit and destroys it during their first ‘fight’ in the 
  subsequent Fight phase, and then consolidates into a second 
  enemy unit, can they then attack that unit during their 
  second ‘fight’? 
  A: The charging unit can only make attacks against the 
  second unit if it also declared a charge against it in its 
  charge phase.  
  Q: If a unit has an ability that allows it to ‘shoot twice’ (e.g. 
  Maugan Ra’s Whirlwind of Death ability, or an Aggressor 
  Squad’s Fire Storm ability), do I need to shoot the same target 
  each time or can I choose different targets? Do I need to resolve 
  these two shooting attacks back to back?
  A: Unless otherwise stated, you can shoot different targets 
  each time it shoots. The attacks are resolved back to 
  back – resolve the first shooting attack completely before 
  resolving the second.
  Q: If an ability instructs me to resolve an attack with a different 
  characteristic (e.g. a Culexus Assassin’s Etherium ability) does 
  this happen before or after any other modifiers that also apply to 
  that characteristic (e.g. the Drukhari Serpentin Combat Drug)?
  A: When resolving such an attack, change the relevant 
  characteristic to the new value before applying any 
  modifiers to that new value.
  In the example above, the Weapon Skill of the model 
  attacking a Culexus Assassin is treated as being 6+ 
  because of the Etherium ability, but the Serpentin then 
  boosts it to 5+. 
  Q: If a model is equipped with two chainswords, do they get to 
  make 2 extra close combat attacks?
  A: Yes (though both must be made with a chainsword).
  Q: Can abilities such as Disgustingly Resilient be used to ignore 
  wounds if they were inflicted by mortal wounds?
  A: Yes.
  Q: If a model has an ability that halves damage suffered 
  (rounding up) such as Marneus Calgar’s Armour of Antilochus 
  ability, how is that resolved when I am attacked by several attacks 
  at once? Do I halve the total of all the damage suffered, or do I 
  halve the damage inflicted by each attack separately? 
  A: Halve the damage suffered by each attack separately.
  Remember that wounds are allocated one at a time. 
  For example, if Marneus Calgar was wounded by four 
  boltgun attacks (Damage characteristic 1) and each 
  saving throw resulted in a failure, Calgar would suffer 0.5 
  wounds (which is rounded up to 1) four times, and would 
  therefore lose 4 wounds.
  
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  WARHAMMER 40,000 RULEBOOK
  Q: If an ability allows me to add 1 to saving throws, does it apply 
  to both normal saving throws and invulnerable throws?
  A: Yes, unless otherwise stated.
  Remember that invulnerable saves are unaffected by the 
  +1 bonus models receive to their saving throws for the 
  benefits of cover.
  Q: If a unit has an ability that allows it to attempt to Deny the 
  Witch (e.g. the Flesh Hounds’ Collar of Khorne, or a Canoptek 
  Spyder’s Gloom Prism), at what range can it attempt to Deny 
  the Witch?
  A: 24".
  Q: A chainsword has the following ability: ‘Each time the bearer 
  fights, it can make 1 additional attack with this weapon’. If, for 
  example, a Khorne Berzerker is armed with a chainsword and 
  chainaxe, does he make two attacks with the chainaxe and then 
  one additional attack with the chainsword, or does he have to 
  split his attacks (making at least one attack with the chainsword) 
  to be able to make the additional attack with the chainsword?
  A: He can make two attacks with the chainaxe, then one 
  additional attack with the chainsword.
  Q: If an ability does not state its effects take place in a ‘friendly’ 
  phase or ‘enemy’ phase, does that mean it works in every such 
  phase (e.g. Mortarion’s Host of Plagues ability, which takes effect 
  ‘at the start of the Fight phase’)?
  A: Yes.
  Q: When a unit has mounts that have a melee profile – for 
  example Thunderwolf Cavalry – can that unit make any 
  attacks they wish to with that mount’s melee profile, or can they 
  only make the additional attacks noted in the weapon profile’s 
  abilities text?
  A: You can only make the additional attacks noted in the 
  abilities text.
  MISSIONS
  Q: When measuring distances to or from an objective marker, 
  do you measure diagonally (i.e. counting both vertical and 
  horizontal distances)? 
  A: Yes.
  Q: Can a unit with the Fortifications Battlefield Role control an 
  objective marker?
  A: Yes, so long as it is considered to be a friendly 
  unit (such as a Building). Note that this means that 
  Fortifications like Feculent Gnarlmaws cannot control 
  objective markers.
  Q: Certain abilities and Stratagems are used ‘before the battle’. 
  When specifically is this?
  A: The game begins when players start the Deployment 
  step of a mission – all abilities and Stratagems that are 
  used ‘before the battle’ must be used before then. 
  Remember that if both players have ‘before the battle’ 
  abilities they wish to use, and the rules themselves do not 
  explicitly say in which order they should be resolved, the 
  players should roll off – the winner decides in what order 
  they are resolved.
  Q: Is the Deployment step of a mission considered to be a ‘phase’ 
  for the purposes of rules?
  A: No. 
  Note that this means that the Strategic Discipline 
  matched play rule does not apply to Stratagems that are 
  used during deployment and they can be used as many 
  times as a player wishes, as long as they have enough 
  Command Points to pay for them and the Stratagem 
  does not explicitly say it can only be used ‘once’, or ‘once 
  per battle’.
  Q: Some units have an ability that says that the models in the 
  unit must be deployed at the same time, but thereafter each 
  model is treated as a separate unit (e.g. Vehicle Squadron, Drone 
  Support, etc.). For the purposes of missions that have the First 
  Blood victory condition, if a unit has such an ability, does every 
  model in it need to be destroyed for the opponent to claim First 
  Blood, or just a single model?
  A: The models in such units are each treated as individual 
  units after they have deployed, so destroying a single one 
  of them satisfies the First Blood victory condition.
  Q: For the purposes of the Sudden Death rule, do units that are 
  embarked within transports with the Flyer Battlefield Role count 
  as being on the battlefield?
  A: No.
  Q: If I am playing the Spoils of War mission, and I generate the 
  Priority Orders Received Tactical Objective, which then generates 
  a Secure Objective X Tactical Objective, can my opponent achieve 
  it and/or can I discard it?
  A: Your opponent cannot achieve the Priority Orders 
  Tactical Objective and you can discard it as you 
  normally would. 
  Q: Are Teleport Homers or Infestation Nodes friendly models? 
  Can they control objective markers?
  A: No to both questions.
  
  9
  WARHAMMER 40,000 RULEBOOK
  ORGANISED EVENTS
  The updated Organised Events guidelines table restricts the 
  number of times a particular datasheet can be included in your 
  army. A few common questions have arisen from this:
  Q1) Some units, like Carnifexes and Leman Russ Battle 
  Tanks, can contain up to 3 models each, but after they are set 
  up on the battlefield, they each become individual units. How 
  many of these models can I include in my army if I’m using the 
  Organised Events guidelines for, say, a 2,000 point game?
  A1) You can include up to 3 units in a 2,000 point game, 
  meaning you could include up to 9 of these models.
  Q2) Do Tactical Drones that are taken as upgrades for certain 
  T’au Empire units (e.g. XV8 Crisis Battlesuits, XV25 Stealth 
  Battlesuits etc.) count as units for the purposes of the Organised 
  Events guidelines, and so count towards the number of Tactical 
  Drones units (i.e. the Fast Attack choice) I can include?
  A2) No.
  Q3) Are the Daemon Prince datasheet from Codex: Chaos 
  Space Marines, the Daemon Prince of Nurgle datasheet 
  from Codex: Death Guard, and the Daemon Prince of 
  Tzeentch datasheet from Codex: Thousand Sons all 
  considered different datasheets for the purposes of the Organised 
  Events guidelines?
  A3) Yes.
  ORGANISED EVENTS
  If you are using matched play for an organised event such as a tournament, we suggest using the table below. As well as a helpful guide to the size of 
  the battlefield and game length, the number of Detachments each player can take in their army is restricted, as is the number of times a player’s army 
  can include a particular datasheet. Of course, if you are organising such an event, you should feel free to modify these guidelines to better suit your 
  event’s own needs, schedule, etc. You can only include the same datasheet in a Battle-forged army up to a maximum number of times, depending 
  upon the points limit for that game, as described below.
  ORGANISED EVENT GUIDELINES
  POINTS LIMIT
  NUMBER OF DETACHMENTS
  NUMBER OF TIMES EACH 
  DATASHEET CAN BE INCLUDED*
  BATTLEFIELD SIZE
  GAME LENGTH
  Up to 1,000
  Up to 2 per army
  Up to 2 per army
  4' x 4'
  Up to 2 hours
  1,001-2,000
  Up to 3 per army
  Up to 3 per army
  6' x 4'
  2 to 3 hours
  2,001-3,000
  Up to 4 per army
  Up to 4 per army
  8' x 4'
  3 or more hours
  *  This does not apply to units with the Troops or Dedicated Transport Battlefield Role, nor does it apply to any units that are added to your army during 
  the battle that cost reinforcement points.
  
SOURCE: textdata/thevault/Warhammer/40k/1st-8th Editions (Prior)/8th Edition (2017)/5) FAQs/2018 FAQs/40k 8e - rulebook en-2.pdf