This advanced railhead was so near the line as to be full of interest on the eve of the April push. It was here you could see the immediate preparations and the immediate results of the preparatory activity. The local casualty clearing stations gave good evidence; you could tell, by watching their convoys, and talking with the wounded, and observing in the operating-theatre, what was going on. Such significant events as the growth of fresh C.C.S.'s and the kind of reserves they were putting-in, were eloquent. Talk with the legion of Flying-Corps observers who were about railhead was enlightening; so was the nature of the reserves they were laying up. The bulk and description of the supply-reserves dumped at railhead for pushing up by lorry-convoy to Arras told their tale also. Every night a convoy of lorries would load and move up under cover of the darkness. There was no mistaking the meaning of such commodities in their freight as chewing-gum and solidified alcohol. Do not suppose, reader, that chewing-gum is for mere distraction in the trenches. Neither is solidified alcohol for consumption by the addicted, but for fuel for Tommies' cookers when coal and wood are impossible of transport. Commodities such as these make one visualise a sudden and overwhelming advance. ---- tons of baled straw were dumped at railhead. This was not for forage, but to strew the floors of empty returning supply-trains for wounded. Each C.C.S. in the area had to be prepared to improvise one such ambulance-train per day when the push was at its height. The handling of these things makes one abnormally busy; if he gets four-hours' sleep in twenty-four he is doing famously. But one is never so jaded as not to be interested in these portentous signs. Once I went up to Arras on a night lorry. The convoy crept up into the lip of the salient. The guns flashed close on either flank; the star-shells lit the road from either side. The reserve dump was in an old factory in the Rue ----. An enormous dump it was. The Supply Officer lived next it on a ground-floor. His men burrowed in an adjacent cellar. He had laid on the floor of the attic above him eight layers of oats. A direct hit would have asphyxiated him with oats. His dump was unhappily placed. There were two batteries adjacent. Whenever there was a raid and the batteries let fly, they were immediately searched for. In the search his dump was found, on more than one occasion. There were ugly and recent shell-holes about it. The off-loading convoy was hit many nights at one point or another. He took me to the bottom of the road after dark. The scream of shell was so incessant that it rose to a melancholy intermittent moan.