New additions to the rules included the ability for infantry models to "Go to Ground" when under fire, providing additional protection at the cost of mobility and shooting as they dive for cover. Actual line of sight is needed to fire at enemy models. Also introduced was the ability to run, whereby units may forgo shooting to cover more ground. In addition, cover was changed so that it is now easier for a unit to get a cover save. Damage to vehicles was simplified and significantly reduced, and tanks could ram other vehicles. Some of these rules were modelled after rules that existed in the Second Edition but were removed in the Third. Likewise, 5th edition codexes saw a return of many units that had been cut out in the previous edition for having unwieldy rules. These units were largely brought back with most of their old rules streamlined for the new edition. Fifth edition releases focused largely on Space Marine forces, including the abolishment of the Daemonhunters in favour of an army composed of Grey Knights, a special chapter of Space Marines, which, in previous editions, had provided the elite choices of the Daemonhunters' army list. Another major change was the shift from metal figures to resin kits.
New additions to the rules included ,the ability for infantry models to "Go to Ground" when under fire, providing additional protection at the cost of mobility and shooting as they dive for cover. Actual line of sight is needed to fire at enemy models. Also introduced was the ability to run, whereby units may forgo shooting to cover more ground. In addition, cover was changed so that it is now easier for a unit to get a cover save. Damage to vehicles was simplified and significantly reduced and tanks could ram other vehicles. Some of these rules were modelled after rules that existed in the Second Edition but were removed in the Third. Likewise, 5th edition codexes saw a return of many units that had been cut out in the previous edition for having unwieldy rules. These units were largely brought back with most of their old rules streamlined for the new edition. Fifth edition releases focused largely on Space Marine forces, including the abolishment of the Daemonhunters in favour of an army composed of Grey Knights, a special chapter of Space Marines, which, in previous editions, had provided the elite choices of the Daemonhunters' army list. Another major change was the shift from metal figures to resin kits.