In the case of the former the Argylls overcame the resistance by advancing in short rushes, while the advent of the tanks encouraged the enemy to surrender in other parts of the front. During these operations a private soldier led his platoon to its objective in Mole Trench, his platoon commander and two sergeants having become casualties as the advance began. On the left of the 8th Argyll and Sutherland Highlanders the 6th Black Watch met no resistance until they had passed the Hindenburg front line. In the later stages of their advance many machine-guns had to be tackled. The front line proved a serious obstacle to the tanks, in spite of their fascines, four of them becoming ditched in it on this battalion front. In consequence, portions of the second wave came under close-range machine-gun fire. Of these guns one was disposed of by a sergeant, who, crawling forward, threw a hand-grenade amongst its team. The remainder were destroyed with the assistance of tanks. In the advance to Mole Trench further resistance was encountered by the 6th Black Watch. First two machine-gun posts on the right held up the advance; but in one case a sergeant, in the other a corporal, worked forward alone and knocked out the teams with hand-grenades. On the left the advance was held up by uncut wire; but the infantry summoned by signals three third-wave tanks from the next battalion front, which crushed the wire and enabled the advance to be continued. On arrival in Mole Trench the 6th Black Watch were raked with enfilade machine-gun fire from Sammy's Trench. A platoon was therefore immediately detached, which, advancing by section rushes under cover of the fire of its Lewis guns, wiped out the entire garrison of Sammy's Trench. The Germans here offered a magnificent resistance, and fought until the last man was killed. Still further fighting occurred, heavy machine-gun and rifle fire being opened on the advancing 6th Black Watch from the Grand Ravine. Individual skill and initiative were again displayed. The first machine-gun was put out of action by a private soldier, who, working towards it alone, killed five and wounded two of the team with rifle grenades. A tank at that moment arrived, and the Grand Ravine was cleared, 6 officers and 100 other ranks being taken prisoner. Meanwhile Lieut.-Colonel N. D. Campbell, commanding this battalion, in making a reconnaissance of the captured ground, came across a dug-out which had not previously been noticed, and with the help of his orderly captured twelve prisoners in it. On the extreme left the 5th Gordon Highlanders made a surprisingly big bag in the outpost line, capturing 21 prisoners in one sap-head, and capturing or killing 22 in another. The Hindenburg front line was entered without difficulty with the tanks, the bulk of the garrison having run back to Triangle Support. Up to this point 2 machine-guns and 200 prisoners had been captured.