- Second World War (1939-1945)
- "A" Squadron, 12th Canadian Armoured Regiment (The Three Rivers Regiment), 1st Canadian Armoured Brigade, 1st Canadian Infantry Division ("A" Squadron, 12th Canadian Armoured Regiment (The Three Rivers Regiment), 1st Canadian Armoured Brigade, 1st Canadian Infantry Division)
During the attack on Nissoria (Sicily), 24 July 1943, Sergeant Allen led his troop with great coolness and daring. In the initial assault he skillfully demolished an anti-tank gun and a strongly held infantry position from point blank range.
After silencing opposition on the objective, Sergeant Allen showed great initiative in the face of enemy fire proceeding to make a reconnaissance on foot. He discovered additional enemy positions and with outstanding leadership aggressively attacked the defences, handling his troop with such spirit and courage in the face of heavy anti-tank and mortar fire that the enemy posts were wiped out.