The next battle around the Ypres salient was to clear the Germans from the remaining high ground to the East of the city. The 20th battalion was involved in the first day's attacks on 31 July, advancing alongside the Ypres-Comines canal for the loss of 8 officers and 431 other ranks. The next advance was held up until near the end of August by heavy rains and was directed along the Menin Road, here the 10th battalion attempted to take and hold Inverness Copse losing over half its original strength by 25 August. General Plumer's methodical advance began on 20 September on the Menin Road ridge. The 20th battalion's advance on 21 September was checked after 200 yards, the 13th battalion reached their objective with both battalions losing around 300 men. The third of General Plumer's steps, the Battle of Broodseinde on 4 October involved the 15th battalion on the extreme right of 21st Division, despite being reduced to two composite companies by German heavy bombardment, they advanced south of Polygon Wood achieving the objective of the village of Reutel. When the battalion was relieved on 6 October it was commanded by a Lieutenant and had lost 430 officers and men.