Monday 6th September 1915

The first tank prototype, developed by William Foster & Company for the British army, was completed and given its first test drive. Several European nations had been working on the development of a shielded, tracked vehicle that could cross the uneven terrain of World War I trenches, but Great Britain was the first to succeed. Lightly armed with machine guns, the tanks made their first authoritative appearance at the Battle of Cambrai in 1917, when 474 British tanks managed to break through the German lines. The Allies began using the vehicles in increasing numbers throughout the rest of the war. After World War I, European nations on all sides continued to build tanks at a frantic pace, arming them with even heavier artillery and plating. This competitive stockpiling came to a lethal head on the battlefields of World War II.