Ironside (cavalry) Ironside (cavalry) The Ironsides were troopers in the Parliamentarian cavalry formed by English political leader Oliver Cromwell in the 17th century, during the English Civil War. The name came from "Old Ironsides", one of Cromwell's nicknames. Cromwell first mustered a troop of cavalry (then referred to as "horse") at Huntingdon in Huntingdonshire, on 29 August 1642, early in the Civil War. John Desborough was quartermaster. The troop was late in being organised, and arrived too late to participate in the Battle of Edgehill, the first pitched battle of the war. Cromwell however did witness the defeat of the Parliamentarian horse
Oliver Cromwell the wealthy and formidable Catholic fortress Basing House, later to be accused of killing 100 of its 300-man Royalist garrison after its surrender. Cromwell also took part in successful sieges at Bridgwater, Sherborne, Bristol, Devizes, and Winchester, then spent the first half of 1646 mopping up resistance in Devon and Cornwall. Charles I surrendered to the Scots on 5 May 1646, effectively ending the First English Civil War. Cromwell and Fairfax took the formal surrender of the Royalists at Oxford in June 1646. Cromwell had no formal training in military tactics, and followed the common practice of ranging his cavalry