Early in July the Battery moved to a forward position near Vimy and, while there, was subjected to another terrific bombardment in which they had nearly one thousand rounds of ammunition destroyed. Several of the officers had close calls, and those who are alive will never forget the experience. About the 31st of July the Battery moved to Hill 70, and took up a position behind the double crassier. They constructed a good position in a very short time. The place was alive with Canadian Field Batteries, and it did not take the Hun long to discover the fact. Nearly all the Batteries were silent; that is, they were not to do any firing until a battle commenced, but the 36th and a few others were selected to do all the firing, including the heavy task of demolishing the wire in the German trenches, so that our infantry could get through. This the Battery did to the entire satisfaction of the infantry, although it was at quite a heavy cost to themselves, as they were constantly shelled day and night, and the position was a most trying one. The battle, which took place about the 14th of August, was one of the bloodiest of the whole war. The Hill was the key to Lens, and the Hun determined to retake it at all costs. In one day there were fourteen counter attacks made by the Hun, and on every occasion the field artillery responded, instantly killing many thousands of Germans. The work of the 36th throughout this engagement was commented on and needs no mention here. In one day they brought up from the ammunition dump and fired over five thousand rounds of ammunition. For two weeks the gunners had practically no rest, while the drivers that could be spared from the wagon lines came up and assisted in getting ammunition ready. So active had the Battery become that the Hun determined to destroy it and made several attempts but without success. However on the night of the 24th of August, while the Battery was firing an S.O.S., in response to a call from the infantry, they were subjected to a very intense shelling with a new gas, afterwards known as mustard gas. This gas is very much of the nature of sulphuric acid, and the burns made by it are very similar. In a short time several men were struck by the shells, some wounded and some killed; others going to the assistance of their suffering comrades got the gas on their hands and were terribly burned. It was an awful night, and some very gallant deeds were done. The returns next day showed three killed, three officers and twenty-five others gassed. Some of the men who were gassed on that occasion never recovered from it. The effects will be with them as long as they live. It was a very bad night for the Canadian Artillery. Other Batteries suffered, some even more severely, but they received unstinted praise for the gallant way they stuck to their guns. Besides the above, the Battery suffered a great many other casualties while in the Hill 70 Sector. In addition to