In World War I, more than half of all supplies for American forces were obtained abroad, including nearly all artillery and airplanes. In this war, almost everything would be shipped from the United States, including immense tonnages sent to the Russians, British, French, and other allies. The demands of modern combat were unprecedented. Although a latter-day infantry division was half the size of its Great War predecessor, it typically used more than twice as much ammunition—111 tons on an average fighting day. In Africa, total supply requirements amounted to thirteen tons per soldier each
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