In March 1644, he was defeated at Cheriton, ending the Royalist campaign in Southern England, and damaging his position with Charles. Although he served in the Lostwithiel campaign, his main role became one of administration; in early 1645, he was appointed to the Council advising the future Charles II. After Naseby in June, the Western Army was the last significant Royalist field force, but was scattered by the New Model Army at Langport in July.