The Battle of Kusegawa (杭瀬川の戦い), also called the Battle of Kuzegawa or Battle of Kuisegawa, is the first known clash between the Western and Eastern armies with the main commanders of each faction. Taking place on the day before Sekigahara, it is usually noted as a skirmish rather than a battle due to the low number of troops involved. This is pretty much ignored in the games.