The peacetime battalion of the regiment, served as infantry within the 168th (London) Infantry Brigade (alongside the 1st London Irish Rifles and 10th Royal Berkshire Regiment), part of the 56th (London) Infantry Division (nicknamed "The Black Cats"), playing a significant part in the Italian Campaign, fighting in the Allied invasion of Sicily, fighting at Monte Cassino, Battle of Anzio, Gothic Line (afterwards transferred to 167th (London) Infantry Brigade) and Operation Grapeshot, the final offensive in Italy in 1945.