20th century history: c 1900 to c 2000 - c 1914 to c 1918 (including WW1).

The greater war[electronic resource] :other combatants and other fronts, 1914-1918 / …で: (言語・文字資料 (印刷物))

First World War

History of other lands

World War, 1914-1918

20th century history: c 1900 to c 2000

European history

Warfare and Defence.