Takasugi, who organized a militia group adopting a Western-style military system named Kiheitai and consolidated the existing military units in the Choshu Domain, carried out a military reform by appointing Masujiro OMURA, equipping the army with the latest weapons like Gewehr rifles and Minie rifles changing tactics.
高杉らは西洋式軍制を採用した民兵である奇兵隊や長州藩諸隊を整備し、大村益次郎を登用してのゲベール銃やミニエー銃など新式兵器の配備、戦術の転換など軍事改革を行う。