 In June 1939, the 56th Anti-Tank Regiment spun off a duplicate unit, the 66th Anti-Tank Regiment, which served in Home Forces throughout the war, mainly with the 55th (West Lancashire) Infantry Division.In September 1941, the 56th and 66th Anti-Tank Regiments each provided a battery to help form a new regiment for overseas service, 83rd Anti-Tank Regiment.This regiment served in Iraq, Palestine and Egypt.