World War History 28 Campaigns 23 Biography 12 Naval operations 8 World War, 1939-1945 8 Submarine 6 Juvenile literature 5 Personal narratives 5 Aerial operations 4 Army 4 Causes 4 Campaign 3 Foreign relations 3 Underground movements 3 Diplomatic history 2 Equipment and supplies 2 Generals 2 Japanese occupation 2 Malaya 2 Military intelligence 2 Military leadership 2 Naval operation 2 Navy 2 Pictorial works 2 Soldiers 2 1939-1945 1 Aerial operation, American 1 Air pilots, Military 1 Airbone troops 1