“Finally, on the evening of the 17th, only one Tank had succeeded in getting through this bad zone and reaching the comparatively good ground beyond. The crew, to whom great credit is due, had already been working continuously for some days and night, and were not only exhausted, but had had no time to carry out any reconnaissance of the position which was to be attacked at dawn the next day. There being, however, only one Tank, made it of greater importance than ever that it should be made the most of. It was decided that it should be used against the very strong position known as the Triangle, which was a redoubt on the high ground, roughly midway between Beaumont-Hamel and Beaucourt. The ground about this redoubt was, unfortunately, also very heavily shelled, and a frontal approach with the infantry was impossible, and it was necessary for the Tank to go in on the flank while the infantry attacked the position frontally. It was realised that the first necessity was that the Tank should reach this redoubt as rapidly as possible, and during the night a route was taped slightly beyond our front line and directing the Tank straight for the Triangle. The weather was now much colder, and the frost rendered the ground less hopelessly outside the capacity of the Tank. “Just before dawn, however, a fresh difficulty arose, and tried still further the already severely tried expedition. It began to snow, and the white tape which was to guide the Tank was obliterated.” Captain Hotblack (now Major, D.S.O., M.C.), the Reconnaissance Officer who had done the taping, was the only man who had reconnoitred this piece of ground, and he immediately volunteered to lead the Tank upon which so much depended. Taking what little cover he could in shell-holes full of ice and water, he walked in front of the Tank past our front line close up to the Triangle. Marvellously enough, not one among the hail of bullets which greeted him and the Tank found its mark. Having succeeded in this arduous enterprise and having guided the machine to its position, he returned to report on the progress of the action. The light was now improving, and the Tank started its “rolling up” movement along the German trenches. The machine was now so much in the midst of the enemy that the German artillery did not dare to open upon it, and the Tank poured in a devastating fire from its machine-guns not only upon the men in the trenches, but also upon some horse transport behind the enemy lines. But, meanwhile, the infantry was hung up in another part of the field, and the Tank was urgently needed. At that time signal communication to the Tanks was very imperfect, and there seemed no way of letting the Tank Commander know of the new development. Again Major Hotblack came forward and again he crossed the fire-swept zone undeterred. He reached the Tank and piloted it back behind our lines, where a renewed attack was planned.