For three hours in the evening the Ontario Regiment was under enemy fire awaiting the order to charge. Two 18-pounders had been installed in the infantry trenches under cover of darkness and fifteen minutes before zero hour they opened fire on the German parapets. One gun under the direction of Lieutenant C. S. Craig cleared the ground of wire entanglements and smashed two German machine guns. Lieutenant Craig, who had been wounded at Ypres, was again injured while doing his duty at Givenchy. Lieutenant L. S. Kelly, in charge of the other gun, was successful in destroying a German machine gun, when an enemy shell demolished his own gun and he received at the same time a serious wound. Corporal King was also struck down and died of his wounds, while several of the gun crew were wounded. A tragic result followed the explosion of a mine. Owing to the fact that water had been found under the German trenches it was impossible to tunnel far enough forward, so an unusually heavy charge was used, which it was hoped would reach the Germans. The explosion had a serious result in the Canadian trench lines, several bombers being killed and wounded, while a reserve depot of bombs was buried under the ruins. As the enemy blew up another bomb depot a little later, the shortage of bombs was keenly felt as there were no other supplies convenient to draw upon. It was at this time that Lieutenant Colonel Beecher, the second in command, was killed by a splinter from a high explosive. Under cover of the smoke and flying débris of the explosion the attacking company under Major G. J. L. Smith dashed forward into the devastating fire from the machine guns in Stony Mountain, and captured the enemy's front trench and Dorchester. The Canadians opposite Stony Mountain were held up by the enemy fire and all were either killed or wounded. Bombing parties had followed the leading company that attacked. The one on the right advanced without a leader, Lieutenant C. A. James, who had charge, having been killed. The bombing party on the left under Lieutenant G. N. Gordon narrowly escaped being wiped out. Only a few straggled back to the first-line trench, among whom was Lieutenant Gordon, who was later wounded and then killed by a German bomb. A blocking party of eight sappers of the 1st Field Company of Canadian Engineers, which had followed the leading company into the attack, had also been all killed and wounded; but one man, Sapper Harmon, gathering bombs from his dead and wounded comrades, bombed his way along the trench alone, finally getting away with ten bullets in his body after he had hurled his last bomb.