oliver cromwell was leader of the _____________.
English solider and statesman Oliver Cromwell (1599-1658) was elected to Parliament in 1628 and 1640. The outspoken Puritan helped organize armed forces after the outbreak of civil war in 1642, serving as deputy commander of the âNew Model Armyâ that decimated the main Royalist force at the 1645 Battle of Naseby.