HISTORY 49 History 30 Military 28 Guerre mondiale, 1914-1918 26 World War, 1914-1918 26 Histoire des unités 25 Regimental histories 25 Campaigns 23 Military campaigns 23 Histoire 20 World War I. 20 Campagnes et batailles 18 Relations extérieures 18 Diplomatic relations 16 Foreign relations 16 Weltkrieg 13 World War, 1939-1945 13 General 12 Guerre mondiale, 1939-1945 12 Argonne, Battle of the, France, 1918 11 Bataille de l'Argonne, France, 1918 11 BIOGRAPHY & AUTOBIOGRAPHY 8 International Relations 8 POLITICAL SCIENCE 8 Historical 7 International relations 7 Western 7 Government 6 International 6 Americans 5