Question: The 76-mm air-defense gun M1914/15 was an anti-aircraft gun used during a war that lasted during which dates?
Sentence (from "World War I"): Over nine million combatants and seven million civilians died as a result of the war (including the victims of a number of genocides), a casualty rate exacerbated by the belligerents' technological and industrial sophistication, and the tactical stalemate caused by gruelling trench warfare.
Relevant evidence: No