The order had been secret for weeks. Toyotomi Hideyoshi — the man who had unified Japan through force of personality and sheer strategic genius, the peasant's son who had climbed to the summit of Japanese power and then, apparently deciding that was not enough, had determined to conquer China — died at Fushimi Castle on September 18, 1598. He was 62 years old, worn down by illness and the weight of a campaign that had consumed the last years of his life.

The Council of Five Elders concealed his death. There were still approximately 60,000 Japanese warriors garrisoned in the stone fortresses — the wajo (Wajo) — they had built along Korea's southern coast. Telling them their lord was dead before the withdrawal was organized risked panic, desertion, and the collapse of an already fragile military situation. So the secret was kept.

Only in late October 1598 did the council finally issue the withdrawal order. By late November, the bulk of those forces were in motion: abandoning their garrisons, moving toward the coast, staging to cross the Korea Strait and come home.

The war they were leaving behind had lasted six years in two phases: the first invasion from 1592 to 1596, the second from 1597 to 1598. Its official name was the Imjin War — 壬辰倭乱 (Imjin Waeran) in Korean — though the Japanese called it the 文禄・慶長の役 (Bunroku-Keicho no Eki). Whatever the name, its scale had been staggering: over 500,000 combatants drawn from Japan, Korea, and Ming China, fighting across a peninsula that had been turned into a killing ground.

The Japanese samurai had been, on land, largely victorious. Seoul fell within three weeks of the initial landing in 1592. Japanese forces advanced rapidly into the peninsula's interior. But the sea belonged to someone else.

Korean Admiral Yi Sun-sin (I Sunsin) — commanding a fleet he had largely rebuilt himself against institutional resistance, operating from a navy that existed in large part because of his own insistence — had made the water impassable to Japanese logistics. In engagement after engagement, his turtle ships and coordinated tactics destroyed Japanese fleets and severed supply lines. Yi never lost a single naval battle in 23 recorded engagements against the Japanese. Without reliable supply from the sea, Japanese land gains became tenuous. Ming Chinese forces intervened. The advance stalled. The war became a brutal, grinding occupation with no achievable political objective.

Hideyoshi sent his generals a final message before he died: bring my men home safely. It was the last order he ever gave.

The final act of the war came December 16, 1598, after the main withdrawal was already underway. At the Noryang Strait (Noryang Haehyop), a combined Korean and Ming Chinese fleet under Yi Sun-sin and Chinese Admiral Chen Lin (Chin Rin) intercepted the Japanese evacuation fleet under Shimazu Yoshihiro. Approximately 500 Japanese ships tried to break through the allied blockade at 2:00 in the morning, in a night battle in a narrow strait. More than half were destroyed.

Yi Sun-sin was struck by a stray arquebus round near his left armpit during the fighting. His final recorded words: 'The war is at its height — wear my armor and beat my war drums. Do not announce my death.' His officers obeyed. His body was dressed in his armor and the drums kept beating, and his men fought on without knowing their admiral was already dead. The battle was won. Yi Sun-sin did not live to see the ships come home.

The samurai who crossed back to Japan in late 1598 came home to a country already fracturing. Hideyoshi's five-year-old heir, Toyotomi Hideyori, was now the nominal lord of Osaka Castle, his claim propped up by a political settlement that Hideyoshi had spent his final years trying to arrange and that was dissolving almost before the ink was dry. Tokugawa Ieyasu was positioning. Ishida Mitsunari was maneuvering. Within two years, the lords who had bled together in Korea would be arrayed against each other on the plain of Sekigahara.

The human cost of the campaign bordered on the incomprehensible. Korean civilians suffered an estimated two million deaths — roughly one in five people. Artisans were abducted to Japan. Temples and historical archives were burned. The pottery traditions that Japanese captors dragged home from Korea would later reshape Japanese ceramics; the resentment the war planted in Korean cultural memory would never fully fade.

Japan gained nothing. No territory. No tribute. No road to China. The warriors who came home in late 1598 had nothing to show for six years of fighting except their lives — and not all of them had even that.