In addition to the two Regular Army battalions, the Loyal Regiment also had two Territorial Army battalions (the 5th and 6th) at the start of the war. The 4th Battalion had been converted to the 62nd Searchlight Regiment, Royal Engineers before the war. In 1940, it was transferred to the Royal Artillery. In 1943, it became 150th (Loyals) Anti-Aircraft Regiment, Royal Artillery and, in March 1944, joined the 9th Armoured Division until it was disbanded and the regiment later served with the 55th (West Lancashire) Infantry Division from August 1944 until March 1945 when it was sent to North-west Europe to join the British Second Army.