At Oivi the battle escalates as the Australians begin to make inroads into the Japanese defences. In heavy fighting 28 Diggers are killed on the day with the Japanese suffering perhaps ten times those losses.
Cpl Peter Esplin of 2/31st Battalion becomes the 500th Digger to die in Kokoda Campaign so far.
Realising his position is tenuous, Gen Horii plans an orderly withdrawal but in the confused fighting his communications break down. Some of his local commanders withdraw unilaterally adding to the confusion and Horii and some senior officers drown while crossing the Kumusi River.