We had proceeded up the communication trench for some 300 yards when word was passed along to me from the rear to double in front, as the entrance of the communication trench was being shelled by the Huns and that there were some casualties due to the congestion. As the whole brigade was coming up in single file and each man had to run across the exposed Arras-Bethune road to get into the communication trench, they were anxious to obtain the protection from shell fire that the trench would afford. I passed the word along to the platoon commander of No. 1 platoon, which had the desired effect. We started at a steady double march, bending under small culverts, through little rivulets of water, slipping and sliding over the muddy trench mats when we found them under our feet. Ofttimes we would suddenly find ourselves up to our hips in muddy water. A considerable number of telephone wires crossed our C.T. Some sagged and were in line with our faces. In the darkness they were hard to see, and if one was unfortunate enough to get caught by the wire under his chin he would have good cause to remember it. Word was being continually passed along as obstacles were encountered, such as, "Wire overhead," "Wire underfoot," "Step down," "Step up," etc. This information was appreciated by those in the rear. After doubling for about 500 yards, word was passed along to me that the "line was broken." This meant that we had left behind us some of the boys who could not run as fast as those in front. This usually happens to the section of Lewis gunners who have their gun equipment to carry, which is much heavier than what the men have to carry in the other sections. We therefore had to halt for a few minutes until they caught up to us. At last we reached the end of our trench. To the right and left, we could see the boys on sentry duty, holding the front line trench. On the fire step men were sitting or lying down trying to get a few minutes' sleep. These were the men who had to hold the front line trenches at all costs. We were what is commonly known as the "storming troops." By the time we had reached the front line trenches, approximately 300 yards from the German front line, their white flares were going up in profusion, and while these flares were up, it was almost as light as day. We passed down the lines the usual caution, "Be sure when the flare light breaks to keep your body perfectly rigid and your face down as you go over No Man's Land to the jumping-off trench."