1614: The Hōkō-ji Bell Inscription Incident and the Winter Siege of Ōsaka
When Ieyasu denounced the inscription "Kokka Ankō, Kunshin Hōraku" cast on the great bell of the Hōkō-ji, rebuilt by Hideyori, as a curse against the Tokugawa house, the Tokugawa side pressed the Toyotomi to accept relocation or surrender hostages. Negotiations broke down, and Ieyasu led a massive army to surround Ōsaka Castle, opening the Winter Siege of Ōsaka.
Events this year
Month 11
Winter Siege of Osaka Begins
A large Tokugawa army surrounded Osaka Castle, while the Toyotomi side conducted a defensive siege centered on positions including Sanada Nobushige's Sanada-maru.
12/19
Truce Ends the Winter Siege of Osaka
A truce was agreed between the Tokugawa and Toyotomi sides, followed by an exchange of pledges, but the conflict remained unresolved and resumed the following year.