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How did the technological and industrial development revolutionise war? Did Germany really use methods that were so different from other countries? German leaders were forced to accept ‘moral responsibility’ for the war at the Treaty of Versailles but German historian Sönke Neitzel explores the circumstances around this switch in tactics to industrial warfare.

(Photo: German soldiers taking advantage of a suitable wind to emit poison gas from cylinders, January 1915.)
(Credit: Henry Guttmann/Getty Images)