Siege of Osaka (1614)
- When
- 1614
- Where
- Kizu River; Osaka Castle
- Episodes
- 2
In 1614, tensions between the Tokugawa and Toyotomi clans escalated after the Toyotomi rebuilt Osaka Castle and gathered rōnin. Tokugawa Ieyasu launched a military campaign, beginning with the destruction of a fort at the Kizu River in November, leading to the formal siege of Osaka Castle in December.
Episodes
- Destruction of Kizu River Fort
Ieyasu led 3,000 men across the Kizu River to destroy a fort, marking the start of hostilities.
- Commencement of Siege of Osaka Castle
After attacking smaller forts, the formal siege of Osaka Castle began on December 4, 1614.
Background and detail
Background. Following the death of Toyotomi Hideyoshi, his son Hideyori and mother Yodo-dono remained at Osaka Castle. Tensions grew as the Toyotomi clan gathered rōnin and enemies of the shogunate. The shogunate interpreted certain inscriptions on a temple bell as curses against Ieyasu, viewing them as acts of treachery that justified military action.
Military Action. In November 1614, Tokugawa Ieyasu led 164,000 men to Osaka to prevent the Toyotomi force from growing. The siege began on November 19 when Ieyasu personally led 3,000 men across the Kizu River to destroy a fort. Several other small forts and villages were attacked before the main siege of Osaka Castle commenced on December 4.
People involved
- Tokugawa Ieyasu · Leader of the Tokugawa shogunate forces
- Toyotomi Hideyori · Head of the Toyotomi clan
- Yodo-dono · Mother of Toyotomi Hideyori and key figure in Osaka Castle
Sources
- Siege of Osaka Wikipedia, revision of 2026-08-22
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.