Oliver Cromwell emerged from a personal collapse, including severe melancholy and life as a tenant farmer, to overthrow the English monarchy and rule as Lord Protector. This deep dive traces his Puritan awakening, his belief in providentialism, and how a man with no military training became a decisive commander in the English Civil War.

We examine the merit-based New Model Army, Pride’s Purge and the execution of Charles I, the deeply contested campaigns in Ireland, the victory at Worcester, his forcible dissolution of Parliament, his refusal of the crown, and the posthumous exhumation and beheading of his body after the Restoration.

• How depression and religious conversion reshaped Cromwell’s life
• Why disciplined cavalry and meritocracy gave his forces the edge
• The trial and execution of King Charles I in 1649
• The historical debate over his actions at Drogheda and Wexford
• Why a man who refused the crown was installed like a king