incomplete. It is evident that most regiments were very weak. The troops present at Marston Moor had a high proportion of recent recruits. Royalists Royalist Army (2500 Horse, 7750 Foot, 14 guns) General Prince Rupert of the Rhine Lieutenant General Lord Byron Sergeant Major General of Horse Sir John Urry (changed sides shortly after the battle)Prince Rupert's Lifeguard (140) Prince Rupert's Regiment (500) Lord Byron's Regiment Colonel Marcus Trevor's Regiment Sir John Urry's Regiment Sir William Vaughan's Regiment (returned from Ireland)(Byron's, Trevor's, Urry's and Vaughan's regiments of horse together totalled 1,100)Lord Molyneux's Regiment Sir Thomas Tyldesley's Regiment(Molyneux's and Tyldesley's regiments were recently raised in Lancashire. Thomas Leveson's Regiment Leveson's Regiment was detached from the garrison of Dudley Castle and had been present at the Relief of Newark Molyneux's, Tyldesley's and Leveson's regiments of horse together totalled 800) Dragoons Colonel Henry Washington (500) Sergeant-Major General of Foot Henry Tillier (captured) Sir John Girlington's Regiment Prince Rupert's Regiment Lord Byron's Regiment (Prince Rupert's and Byron's regiments formed a separate brigade, numbering 1,500, commanded by Lieutenant Colonel Robert Napier of Byron's regiment) Henry Warren's Regiment Sir Michael Erneley's Regiment Richard Gibson's Regiment (Warren's, Erneley's and Gibson's regiments had returned from Ireland in late 1643 or early 1644, and had suffered heavy losses at the Battle of Nantwich. Erneley's and Gibson's regiments were brigaded together) Robert Ellice's Regiment Henry Tillier's Regiment Robert Broughton's Regiment (Tillier's and Broughton's regiments had returned from Ireland in early 1644; Robert Ellice's regiment consisted of men from North Wales but had joined these two regiments on their march through Lancashire). Sir Thomas Tyldesley's Regiment Edward Chisenall's Regiment (Tyldesley's and Chisenall's regiments were recently raised in Lancashire). Henry Cheator's Regiment (raised in Cumberland, joined Rupert's army at Skipton at the end of June) 14 assorted field guns The hard core of this army was Rupert's own regiments of horse and foot, and a small army under Lord Byron from Cheshire and North Wales. To this had been added English regiments recently returned from Ireland, which were said to be full of Puritan sympathisers, and newly raised units from Lancashire, with other small contingents. Contingent of "Northern Horse" (3500 Horse, 220 foot) General of Horse George, Lord Goring Lieutenant General Sir Charles Lucas (captured) Commissary General George Porter (captured) Newcastle's cavalry escaped from York shortly after the start of the siege and moved through Derbyshire to link up with Rupert near