島津家久

Shimazu Iehisa (1547–1587), youngest of the four Shimazu brothers, was arguably the finest battlefield tactician among a family of brilliant warriors. He perfected and wielded the 'tsurinobuse' — the Shimazu signature strategy of feigned retreat leading enemy forces into a prepared ambush — with devastating effect. His supreme moment came at the Battle of Okitanawate in March 1584, where with six thousand men he annihilated an army of thirty thousand under Ryūzōji Takanobu, the most powerful daimyō in northern Kyushu. Takanobu himself was cut down in the fighting, and Kyushu's political balance shifted irreversibly toward Shimazu dominance. Iehisa's sword culture was deeply rooted in Satsuma's distinctive martial tradition, the gōjū (郷中) educational system that trained boys from childhood in martial arts as a total way of life. Satsuma's local smiths — the Satsuma Shintō school that would produce masters like Masukuni — forged blades with a direct, powerful aesthetic suited to the ferocious Satsuma fighting style: first the matchlock volley, then the sword charge, and no retreat. The blade Iehisa carried into battle embodied that philosophy of total commitment. He died suddenly and mysteriously in Bungo Province in 1587, possibly poisoned, just as the Shimazu submitted to Hideyoshi — a loss that deprived the clan of its greatest tactician at the very moment it most needed one.