Oliver Cromwell

Cromwell, as a cavalry commander in the Parliamentarian army, played a key role in the decisive victory over Royalist forces at Marston Moor. This battle secured Parliament's control of northern England and boosted Cromwell's military reputation.

Cromwell led the New Model Army to a decisive victory over King Charles I's forces at Naseby. This battle effectively ended the First English Civil War, leading to the capture of the king and Parliament's supremacy.

Cromwell led a brutal military campaign in Ireland to suppress the Irish Confederacy and Royalist alliance. His forces massacred garrisons at Drogheda and Wexford, resulting in widespread death and land confiscation, cementing English Protestant dominance.

Cromwell was a leading figure in the trial and execution of King Charles I for treason. This unprecedented act abolished the monarchy and established the Commonwealth of England, a republican government.

Cromwell was installed as Lord Protector of the Commonwealth of England, Scotland, and Ireland, effectively becoming head of state. He ruled as a military dictator, dissolving parliaments and imposing Puritan moral laws.