Why was the Japanese army looking for revenge?

The Takenaga incident (Japanese: 竹永事件, Hepburn: Takenaga jiken) was a surrender by an Imperial Japanese Army battalion that occurred on 3 May 1945, near the end of the Pacific War. The battalion, commanded by Lieutenant Colonel Masaharu Takenaga,[note 1] surrendered to the Australian Army in eastern New Guinea. This was extremely unusual for the Japanese Army, where surrender was seen as highly dishonourable.