 The American attack commenced at 05: 50 on 10 January with a bombardment by six battalions of artillery and airstrikes by 24 CAF aircraft on suspected Japanese positions in the valley between Hill 57 and the jumping-off point for the 1st Battalion. Beginning their advance at 07: 30, the 1st Battalion successfully gained the summit of Hill 57 by 11: 40 against light resistance.
