HISTORY 90 World War, 1939-1945 73 Military 66 Guerre mondiale, 1939-1945 65 BIOGRAPHY & AUTOBIOGRAPHY 56 Historical 52 World War II 45 History 40 Campaigns 38 Military campaigns 38 Campagnes et batailles 37 Armed Forces 33 Histoire des unités 28 Regimental histories 28 American 23 Aerial operations, American 20 Military operations, Aerial 20 Histoire 17 Soldiers 17 Weltkrieg 17 Vietnam War, 1961-1975 15 Western 15 Guerre du Viêt-nam, 1961-1975 13 World War, 1914-1918 12 Guerre mondiale, 1914-1918 11 Medical care 11 Officers 11 Soins médicaux 11 Anciens combattants 9 General 9