At that moment our big guns started shelling the German trenches, and knowing that the diversion would momentarily occupy the snipers' attention the others raced safely across in a body. The remainder of the journey was made in comparative safety, the only danger being from exploding shrapnel overhead. But one does not trouble very much about that after a time. Reaching the front trenches, I made my way along to a point from which I could best view the Petite Douve. Obtaining a waterproof sheet we carefully raised it very, very slowly above the parapet with the aid of a couple of bayonets. Without a doubt, I thought, the Germans would be sure to notice something different on that section after a few seconds. And so it proved. Two rifle-shots rang out from the enemy trench, and right through the sheet they went. Our object in putting up this temporary screen was to hide the erection of my tripod and camera, and then at the moment the bombardment began it was to be taken away, and I would risk the rest. Just when the bullets came through I was bending to fasten the tripod legs. A few seconds earlier and one or other of them would have surely found my head. Getting some sandbags, we carefully pushed them on to the parapet, in order to break the contact as much as possible, and we put one in front of the camera in a direct line to cover the movement of my hand while exposing. I was now ready. Raising my head above the parapet for a final look, I noticed I was fully exposed to the right German trenches, and was just on the point of asking Captain ---- if there was any possibility of getting sniped from that direction when with a "zipp" a bullet passed directly between our heads. Having obtained such a practical and prompt answer to my enquiry, though not exactly the kind I had expected, I had some more sandbags placed, one on top of the other, to shelter my head as much as possible. All I had to do now was to focus, and to do that I lifted the bottom edge of the screen gently. In a few seconds it was done, and dropping the screen, I waited for the first shot. I was warned by an observing officer that I had still five minutes to spare. They were not bombarding until 2.15. German shells were continually dropping all round. The part of the hill down which we came was getting quite a lively time of it. The enemy seemed to be searching every spot. On the right a Canadian sniper was at work, taking careful aim. Turning to me, he said: "Wall, sir, I bet that chap won't want any more headache pills." The remark caused a good deal of laughter. Boom--boom--boom. In rapid succession came two shells from our guns. Everyone was alert. I sprang to my camera. Two men were standing by me, ready to take down the screen. Boom came another shell, and at a sign the men dropped the screen. I was exposed to the full view of the German lines, from my shoulders upwards.