With the _18th Corps_ twelve Tanks of the 1st Brigade headed an attack on Bülow Farm, Vancouver, Winnipeg, and other strong points. They proved useful, and several Tanks were in action for longish periods. Two things are remarkable about this operation: first, that every Tank which ventured to leave the road instantly bellied. One was “drowned” in six or seven feet of water. Secondly, the remarkable way in which they affected enemy _moral_. In several instances parties of the enemy surrendered at the sight of them. Prisoners in their examination said that they could have held up infantry, but “felt helpless against Tanks.” Next day, on August 23, four 2nd Brigade Tanks went into action near Inverness Copse. The operation had had to be undertaken in a hurry, liaison was bad, and the attack a failure. On August 26 four Tanks fought with the 33rd Division in the neighbourhood of Jerk House (near Glencorse Wood). The morning was misty, and an enemy shell unfortunately exploded a dump of smoke bombs just behind our lines. The attack was a failure. That night an inch of rain fell, and four Tanks which were to have operated with the 14th Division next day, August 27th, never reached their starting-point. Thirteen men were wounded and an officer killed on the way up. Nearly three weeks elapsed before Tanks were again in action, and several battalions from the 2nd and 3rd Brigades were moved back to a new training area near Arras. A certain number of “Replacement Tanks” were issued to remaining battalions. The 1st Brigade stood ready in case they should be wanted at short notice, but no attacks of any sort were launched, probably partly on account of weather, and partly because a section of the 5th Army front was in process of transfer to the 2nd Army. By the middle of September the relief had been completed, and again we endeavoured to press on. On September 20 a fairly successful assault was made along the whole line. 2nd Brigade Tanks took part near Inverness Copse, and 1st Brigade Tanks near Triangle and Wurst Farms. But the ground being known to be unusually appalling in both areas, they had been given minor parts. These parts they played with fair success, and they undoubtedly scared the enemy a good deal. On the 18th Corps front 3rd Battalion Tanks had rather better luck. The efforts made by the crews to get to the battle at all were superhuman. Trees had been felled across the road by the enemy, resting breast high on their branches and the tall stumps from which they were not completely severed. At Wurst Farm also this kind of obstacle had been opposed to the Tanks--the butts of the trees lying obliquely and at a slope, forming a barrier very difficult to surmount. If one leading machine got into difficulties struggling in the dark through or over these obstacles, the whole string of Tanks behind would be hung up, the deep swamps on either hand making it impossible to leave the road.