After the retreat to Dunkirk and being evacuated to England, the 4th Battalion was reformed and remained with the 145th Brigade until the brigade disbanded in November 1943 and the battalion was transferred to the 144th Infantry (Reserve) Brigade, still as part of the 48th Division, now designated the 48th Infantry (Reserve) Division and responsible for the training of all new Army recruits. On 24 July 1944 it was transferred to the 213th Brigade, which was later redesignated the 140th Brigade, part of the 47th Infantry (Reserve) Division, after the original 140th Brigade was disbanded. The battalion acted in a training capacity, sending drafts of replacements overseas and did not see active service again. In 1943 the battalion had sent 46 officers and 1,524 other ranks as replacements.