Following the unification of Japan under Hideyoshi, in 1592, he command 'Reserves division' at First Korean campaigns. Later in 1597, Hideie became a 'Chief Commander' in the Second Korean campaigns, returning in 1598 to serve as one of Hideyoshi's five counselors (Council of Five Elders) along with Maeda Toshiie, Uesugi Kagekatsu, Mōri Terumoto, and Tokugawa Ieyasu.