Following the battle, Potts was recalled to Port Moresby, with Porter being placed in command. The depleted 21st Brigade was withdrawn to Ioribaiwa Ridge. It was reinforced by the 3rd Battalion and awaited relief by the 25th Brigade, under command of Eather. Eather took command of the combined force but the Japanese attacked just as his battalions were taking up position—with fighting over the period 14 to 16 September. He obtained permission to withdraw and consolidate at Imita Ridge—the final defensive position along the Track. Meanwhile, American forces had landed at Guadalcanal on 7 August. Unable to support both operations, Horii was ordered to withdraw. When Eather attacked the Japanese positions on 28 September, he found them abandoned. The Australian forces cautiously pursued the Japanese withdrawal. The 16th Brigade was committed to the advance and direct command passed to the 7th Division, under Major General Arthur "Tubby" Allen.