During the First English Civil War (1642–1646) the county gave strong support to the Roundheads (Parliamentarians), in contrast to the rest of Wales, which was staunchly Royalist. In spite of this, an incident in Pembrokeshire triggered the opening shots of the Second English Civil War when local units of the New Model Army mutinied. Oliver Cromwell defeated the uprising at the Siege of Pembroke in July 1648. On 13 August 1649, the Cromwellian conquest of Ireland began when New Model Army forces sailed from Milford Haven.