 On 4 October , C Company 3 RAR — under the command of Major Jack <unk> — attacked the long spur running east from the peak of Hill 355 , known as Hill 220 . <unk> their assault at 09 : 00 , the Australians quickly killed or drove off the defenders before pressing on up the spur and routing the remainder of a Chinese company . Reaching their objectives by 10 : 00 , the Australians then took advantage of the initiative gained so far , pushing a platoon towards the summit of Hill 355 . Amid heavy fighting , the Australians cleared the eastern slopes of Kowang @-@ San by 12 : 00 , despite having received no orders to do so . Thirteen Chinese were killed and three captured in the fighting , while Australian casualties included 11 wounded , one of whom subsequently died . <unk> was later awarded the Distinguished Service Order ( DSO ) for his leadership . C Company withdrew to the rear of the 3 RAR position and were replaced by D Company , who occupied the position held by A Company 500 metres ( 550 yd ) north of Hill 199 . Meanwhile , led by a <unk> , the Borderers made a simultaneous assault up the western face of Kowang @-@ San , and fearing they may be caught between two attacks the Chinese defenders abandoned Hill 355 , withdrawing northwest under heavy indirect fire . 
