<human>:  Why did the Australians lose in the Battle of Kokoda?
<bot>: The Australians lost because they were outnumbered. The Japanese army had more soldiers, and they were better trained and equipped. The Australians had no air support, and they didn’t have enough food or water. They also didn’t have a navy to protect them from Japanese submarines. The Australians lost the battle, but they fought bravely and eventually beat the Japanese in New Guinea.