 The most significant action during this time took place on 11 December when the 2/24th Infantry Battalion attacked the 2200 feature north-east of Wareo, near the Christmas Hills, which resulted in 27 Japanese killed.The next phase of the campaign involved the advance of Australian forces along the coast towards Sio, about from Finschhafen.Following the capture of Gusika, the responsibility for the first part of the advance to Sio was taken over by the infantry of the 4th Brigade, under the command of Brigadier Cedric Edgar.