Siege of Osaka

Siege of Osaka
Part of the early Edo period
Illustration from François Caron's book: "The Burning of Osaka Castle"
Date November 8, 1614 - January 22, 1615 and May - June 1615 Location Osaka Castle, Osaka, Japan and surrounding areas Result Tokugawa shogunate victory; all threats to the shogunate temporarily eliminated.
Belligerents
Tokugawa shogunate	Toyotomi clan
Commanders and leaders
Tokugawa Ieyasu Tokugawa Hidetada Todo Takatora Ii Naotaka Matsudaira Tadanao Date Masamune Honda Tadatomo † Asano Nagaakira	Yodo-dono † Toyotomi Hideyori † Sanada Yukimura † Gotō Mototsugu † Akashi Takenori Chōsokabe Morichika  Mōri Katsunaga † Kimura Shigenari † Ōno Harunaga †
Strength
164,000 (winter) 150,000 (summer)	120,000 (winter) 60,000 (summer)
Casualties and losses
Minimal	Thousands killed

The Siege of Osaka (大坂の役, Ōsaka no Eki^?, or, more commonly, 大坂の陣 Ōsaka no Jin) was a series of battles undertaken by the Tokugawa shogunate against the Toyotomi clan, and ending in that clan's destruction. Divided into two stages (Winter Campaign and Summer Campaign), and lasting from 1614 to 1615, the siege put an end to the last major armed opposition to the shogunate's establishment. The end of the conflict is sometimes called the Genna Armistice (元和偃武, Genna Enbu^?), because the era name was changed from Keichō to Genna immediately following the siege.

When Toyotomi Hideyoshi died in 1598, Japan came to be governed by the Council of Five Elders, among whom Tokugawa Ieyasu possessed the most authority. After defeating Ishida Mitsunari in the battle of Sekigahara in 1600, Ieyasu essentially seized control of Japan for himself, and abolished the Council. In 1603, the Tokugawa shogunate was established, with its capital at Edo. Ieyasu sought to establish a powerful and stable regime under the rule of his own clan; only the Toyotomi, led by Hideyoshi's son Toyotomi Hideyori and based at Osaka, remained an obstacle to that goal.

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