On 15 September, General Hyakutake at Rabaul learned of Kawaguchi's defeat, the Imperial Japanese Army's first defeat involving a unit of this size in the war.
Petnaestog dana rujna general Harukiči Hjakutake u Rabaulu saznaje o Kavagučijevom porazu, prvi poraz jedne ovakve postrojbe carske japanske vojske od početka rata.