History World War, 1914-1918 Campaigns 374 Regimental histories 220 World War, 1939-1945 188 Guerre mondiale, 1914-1918 179 Histoire 172 more ... Politics and government 146 Soldiers 127 Social aspects 126 Social conditions 113 Influence 107 Causes 104 Foreign relations 82 Women 72 History, Military 70 History and criticism 55 Weltkrieg 48 Naval operations 46 Territorial questions 44 Diplomatic history 42 Armed Forces 40 Literature and the war 39 Medical care 39 Naval operations, German 39 Peace 38 Social life and customs 38 Aerial operations 35 Propaganda 34 Nationalism 33 less ...