The review coincided with increasing dissatisfaction as to the conduct of certain senior commanders; in July 1644, a Parliamentarian force under Sir Thomas Fairfax and Oliver Cromwell secured control of Northern England by victory at Marston Moor. However, this was offset first by defeat at Lostwithiel in September, then lack of decisiveness at the Second Battle of Newbury in October. The two commanders involved, Essex and Manchester, were accused by many in Parliament of lacking commitment, a group that included moderates like Sir William Waller as well as radicals like Cromwell.