Battle of Yamazaki
Shortly after Nobunaga's death, Hidekatsu assisted Hideyoshi during the Battle of Yamazaki, and defeated Akechi Mitsuhide. He also served Hideyoshi during the Battle of Komaki and Nagakute in 1584. Hidekatsu suddenly died in 1586, with many people believing that Hidekatsu was killed on the orders of Hideyoshi.