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
English Civil War York out of the hands of those desperate persons who were about them". The Lords Lieutenant, whom Parliament appointed, used the Militia Ordinance to order the militia to join Essex's army. Two weeks after the King had raised his standard at Nottingham, Essex led his army north towards Northampton, picking up support along the way (including a detachment of Cambridgeshire cavalry raised and commanded by Oliver Cromwell). By the middle of September Essex's forces had grown to 21,000 infantry and 4,200 cavalry and dragoons. On 14 September he moved his army to Coventry and then to the north of the