sentences:  In the days immediately after the battle, the Australians continued to carry out patrolling operations around the knoll.On 7 April, a patrol from the 9th Infantry Battalion clashed with a Japanese force of about 30 men and in the ensuing engagement four Japanese were killed, while a patrol from the 61st Infantry Battalion on 8 April killed another five.On 13 April, the order was given that the 7th Brigade would be gradually withdrawn and relieved by the 15th.