 Shimazu Takahisa earned the distinction of being the first Daimyō to use European firearms in battle.Over the next few years, Shimazu Takahisa began continuously expanding the Shimazu's territory on the island of Kyushu.Sources
↑ Samurai Commanders 1, Stgephen Turnbull pg.49

↑ Samurai Sourcebook, Stephen Turnbull pg.78

↑ Samurai Commanders 1, Stephen Turnbull pg.49