World War, 1914-1918 History 119 Guerre mondiale, 1914-1918 100 Politics and government 52 Foreign relations 51 Campaigns 50 Economic aspects 47 more ... Regimental histories 45 Causes 44 Atrocities 29 Peace 25 Naval operations 24 War 21 Diplomatic history 20 Finance 20 Diplomatic relations 17 Histoire 17 Germans 16 Military campaigns 16 Armed Forces 15 Erster Weltkrieg 15 Territorial questions 15 German Americans 14 Pangermanism 14 War work 14 World War, 1939-1945 14 Soldiers 13 Women 13 Neutrality 12 Public opinion 12 Civilian relief 11 Reconstruction (1914-1939) 10 Campagnes et batailles 9 Defenses 9 Economic conditions 9 Jews 9 Political activity 9 Registers, lists, etc 9 Submarine 9 World War I. 9 less ...