He led the attack that captured and wrecked Wilton Castle, the home of Sir John Brydges who then abandoned his former neutrality and joined the Parliamentary cause.
[2] After Hereford, the county town of the predominantly Royalist area, was briefly seized by William Waller in 1643 he was appointed Governor and began to rebuild its defences to make it a stronghold for the King.
The same year, following the Parliamentarian victory at Battle of Naseby, he successfully defended the city during the Siege of Hereford from a large army of Scottish Covenanters allied to the English Parliament and commanded by the Earl of Leven.
Scudamore fled quickly, abandoning his post, and was accused of cowardice and then for taking a bribe to allow the city's fall.
[7] He rode to Worcester, still in Royalist hands, to defend himself but was imprisoned without trial for seven months as the King rejected his claim that it was his subordinate officers who were at fault.