The First World War by John Keegan — Summary, Key Ideas & Quotes

Keegan challenges the simplistic view that World War I was an accidental result of alliances and diplomatic blunders. He explores the deep-seated anxieties, nationalisms, and structural weaknesses in European societies that made the war possible, arguing that the conflict was not inevitable but became more likely due to a complex interplay of decisions, fears, and ambitions.

One of Keegan’s central themes is how the First World War marked a transformation in the nature of warfare. He details how industrial technology—machine guns, artillery, railways, and chemical weapons—made the conflict uniquely destructive and impersonal, overwhelming traditional strategies and leading to unprecedented casualties and suffering.