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.

they died with poison from the god patrick

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.