The 18th saw the general advance renewed, but it was hampered by the fact that the heavy weather made it difficult to obtain the artillery support which is so needful where buildings have to be carried. The Indians upon the left sustained a heavy attack upon this day, the losses falling chiefly upon the Sirhind Brigade, and especially on the 1st Highland Light Infantry and the 15th Sikhs. It was in this action that Lieutenant Smyth and Private Lal Singh of the latter regiment saved the fight at a critical moment {134} by bringing up a fresh supply of bombs. Ten men started on the venture, and only the two won home. The 19th was wet and misty. It was upon this date that the two hard-working and victorious Divisions, the Second and the Seventh, were relieved respectively by the Fifty-first Highland Territorial Division and by the Canadians, the guns of the two regular Divisions being retained. The operations which had hitherto been under Monro of the First Corps, were now confided to Alderson of the Canadians. At this time, the general level of the advance was the road which extends from La Quinque to Bethune. The change of troops did not entail any alteration in strategy, and the slow advance went forward. Upon the night of May 20-21 the Canadians continued the work of the Seventh Division, and added several fresh German trenches to the area already secured. From Richebourg to the south and east there was now a considerable erosion in the German position. The first objective of the Canadians was an orchard in the Quinque Rue position, which was assaulted by the 14th Montreal Regiment (Meighen) and the 16th Canadian Scottish (Leckie), after a gallant reconnaissance by Major Leckie of the latter regiment. The Canadians were thrust in between the 3rd Coldstream Guards of the Second Division upon their left, and the 2nd Wiltshires of the Seventh Division upon their right. The orchard was cleared in most gallant fashion, and a trench upon the flank of it was taken, but the Canadian loss was considerable in the battalions named and in the 13th Royal Canadian Highlanders in support. Another Canadian battalion, the 10th, had attacked the German line a mile to the south of the orchard, and had been repulsed. A {135} heavy bombardment was organised, and the attempt was renewed upon the following day, two companies of the 10th, preceded by a company of grenade-throwers, carrying 400 yards of the trench at a very severe cost. It was partly recaptured by the Germans upon May 22, while part remained in the hands of the Canadians. Several counter-attacks were made upon the Canadians during this day, but all withered away before the deadly fire of the Western infantry.