Three of them were hidden in the ruins of farmsteads. That in the Mont du Hibou was manned by a garrison of about eighty men, and the Cockcroft was still more strongly held. Triangle Farm and Hillock Farm were slightly smaller. It was essential that they should be taken, and General Sir Ivor Maxse, commanding the 18th Corps, was informed by the Brigadiers concerned that their capture would probably cost us 600 to 1000 casualties. He and Colonel Baker-Carr (commanding 1st Brigade of Tanks) then considered the possibility of a Tank attack. Colonel Baker-Carr, admirably undismayed by the dismal events of the 16th, optimistically guaranteed the fortresses at half the estimated cost to the infantry, and the attack was arranged. One innovation he specially asked for. There was to be no shelling, but he was to be granted the concealment of a smoke barrage. Having once decided to entrust the affair to the Tanks, General Maxse was zealous to give them every possible chance of success and did not hesitate to modify his orders to suit their considered demands. Only twelve Tanks were to be employed, and they and their infantry were to use the roads for as far as these served them. Colonel Baker-Carr decided to form a composite Company from “G” (7th) Battalion under the command of Major Broome. The resulting action, small as were the numbers engaged, will ever find a place in the annals of the Tank Corps. [38]“In spite of the appalling condition of the ground, for it had now been raining steadily for three weeks, a very memorable feat of arms was achieved.” The four strong points were triumphantly captured. [39]“Phenomenal results were obtained at very little cost, for instead of 600 to 1000 casualties, the infantry following the Tanks only sustained fifteen!” At 4.45 a.m. on the morning of August 19, the artillery isolated the doomed strongholds in clouds of dense smoke. The action had been carefully rehearsed. Two Tanks were to be used against each pill-box, and they were to take them in rear, so striking where the forts were most vulnerable, and at the same time cutting off the garrison’s retreat. Just before six o’clock the enveloping manœuvre was complete, and the first pill-box--Hillock Farm--fell, nearly all its garrison having fled. At 6.15 two Tanks reached the Mont du Hibou, and fired forty rounds from their 6-pounder guns into the back door of the stronghold. Sixty of the garrison fled, of whom about half escaped or were shot down, and the rest surrendered to the infantry as soon as it came up. Triangle Farm fell ten minutes afterwards. The garrison had put up a fight against the Tanks and our infantry killed them all, mostly with the bayonet. At the Cockcroft the attacking Tank[40] got ditched within fifty yards of its victim. But at sight of it the garrison of over 100 “withdrew.” The Tank and its infantry immediately opened fire with their Lewis guns, and more than half the fugitives fell.