To make Nagayoshi MORI, a military commander of the Hashiba's forces, and Tsuneoki IKEDA, his father-in-law, raid Okazaki-jo Castle, a military troop separate from the main body, with Hidetsugu TOYOTOMI (Hidetsugu HASHIBA) as the supreme commander, started moving.
羽柴軍の武将・森長可とその義父・池田恒興が岡崎城を奇襲すべく、豊臣秀次（羽柴秀次）を総大将とする別動隊を率いて出陣した。