 The attack was now behind schedule . Indeed , the Borderers were still more than 1 @,@ 000 yards ( 910 m ) short of their final objective , and with stubborn resistance being encountered during the initial phase , Hill 355 would now not be secured until the afternoon of 4 October . The assault was being slowed by two positions on the northeast slopes of Hill 355 — known as Hill 220 — from which the Chinese held the British right flank in enfilade . C Company 3 RAR would be detached to assist the attack on Kowang @-@ San the next morning , with the Australians tasked with outflanking the Chinese defences and capturing this position . Heavy Chinese artillery fire had also slowed progress with more than 2 @,@ 500 rounds falling in the 28th Brigade area in the previous twenty @-@ four hours , although this total was <unk> many times over by the weight of allied artillery fired across the brigade front , which included 22 @,@ <unk> rounds . On the division 's left flank , the delay also meant that the Canadian attack scheduled for 06 : 00 the next day in the 25th Brigade sector would have to be postponed until 11 : 00 , due to the continuing requirement to use the divisional artillery in support of 28th Brigade . 
