There was also increasing dissension among Parliament's generals in the field. Parliament suspected that many of its senior officers, who were mainly Presbyterians, were inclined to favour peace with King Charles, and were conducting operations half-heartedly as a result. The Earl of Manchester was one of the prominent members favouring peace, but his Lieutenant General, Oliver Cromwell, strongly advocated fighting the war to the finish. Manchester and Cromwell clashed publicly over this issue several times. Parliament's senior commander, the Earl of Essex, was also suspected of lack of determination and was on poor terms with his subordinates. The tensions among the Parliamentarian generals became a bitter public argument after the Second Battle of Newbury. Some of them believed that King Charles's army had escaped encirclement after the battle through inaction on the part of some commanders.