While serving as a gunner and wireless operator with the British Royal Air Force (RAF) during the Second World War, the actor’s Lancaster NE112 was shot down over France and he was captured by the Germans. Following the Second World War, Dunn returned to stage acting, which led him to various on-screen appearances, including his famed role in Dad’s Army. Yet another airman-turned-actor, Peter Butterworth served with the British Royal Navy’s Fleet Air Arm (FAA) during World War II.