World War I Army Tank |
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A World War I army tank in action. Infantrymen are advancing up hill, behind the tank. The tank is propelled and steered by two caterpillar treads moved like belts, an American invention. The first tanks debuted on September 15, 1916, at the Battle of the Somme. The caterpillar treads were invented by James B. Hill (of Ohio and Louisiana), who referred to the contraption as "apron traction" (originally designed as part of the Buckeye Traction Ditcher). |
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