Churchill's armoured caterpillar-tractor proposal

Churchill's letter translates the tactical problem into concrete vehicle requirements: armour for men and machine guns, caterpillar tracks for trenches, enough weight to crush wire, and weapons that could sweep enemy positions. It focuses on crossing roughly one or two hundred yards of open ground and entanglements. Churchill complained that the problem had been apparent for more than two months without preparations. The proposed machine had to protect its crew while carrying firepower into the enemy trench system. By specifying armour, tracks, weight, and weapons, the letter moved the landship idea toward a machine that engineers could build and test.