Returned to fitness, in September 1942 Morgan was appointed an acting lieutenant-general to be Chief of the General Staff for Home Forces. When British land forces were reorganised in July 1943 to create the 21st Army Group for the planned invasion of northwest Europe, Morgan became Chief of Staff of the new army group. His rank was upgraded to temporary lieutenant-general in September 1943 and he was appointed Companion of the Order of the Bath (CB) in the 1944 New Year's honours list.