Lot-3478-2: British Activities, WWII. Northern Anti-Aircraft Gunnery School for Inter-Allied Merchant Seaman. Seamen of almost all nationalities are trained in anti-aircraft gunnery by Royal Navy instructors at a Northern gunnery establishment. Chinese, Dutch, Belgians and Africans all go voluntarily to learn how to handle defense weapons to repel enemy aircraft attacks. Shown: A West Indian fires a Lewis gun. Office of Emergency Management.