The US 128th Infantry Regiment began an attack on Japanese positions south of Buna, Australian Papua. The 1st Battalion (Colonel McCoy) attacked along the coast from Embogo and crossed the Samboga River, while the 3rd Battalion (Colonel Miller) attacked inland from Simemi. Their objectives were the air strips at the centre of the Japanese eastern defences. On the first day opposition was minor but their sole supply line, consisting of six barges ferrying supplies from the airstrip at Ponondetta further to the east, was destroyed when Japanese Zero fighters strafed the barges, destroying their loads of ammunition, medicine and critically, the artillery and mortars. With the loss of the barges further movement was delayed until 19 Nov 1942 as troops and stores had to come by foot