33°39′20″N130°26′44″E / 33.65556°N 130.44556°E /33.65556; 130.44556
| Battle of Kashii | |||||||
|---|---|---|---|---|---|---|---|
| Part of theSiege of Osaka | |||||||
 At the remains of Kashii battlefield in Sennan, Osaka prefecture, Japan. | |||||||
| |||||||
| Belligerents | |||||||
| Tokugawa shogunate | Toyotomi clan | ||||||
| Commanders and leaders | |||||||
| Asano Nagaakira | Ōno Harunaga Ban Naoyuki † Okabe Noritsuna | ||||||
| Strength | |||||||
| 5,000 | 3,000 | ||||||
TheBattle of Kashii (樫井の戦い) was the first battle of the Summer Campaign of theSiege of Osaka, fought inJapan in 1615, near the beginning of theEdo period. It took place on the 26th day of the 4th month of theKeichō era.
As the Shōgun's Eastern Army prepared to renew the siege begun the previous winter, theŌsaka garrison sallied and ambushed Tokugawa forces in a number of skirmishes and sieges. In the battle of Kashii, a contingent of forces loyal toToyotomi Hideyori, lord of Ōsaka, attempted to besiegeWakayama Castle, which was controlled byAsano Nagaakira, an ally of the shōgun. The attackers were led byŌno Harunaga,Ban Naoyuki, and Okabe Noritsuna.
Tachibana Muneshige, who served as military advisor of the second shogun,Tokugawa Hidetada,[1] had correctly predicted the movements of Toyotomi's general Ono Harufusa's troops, and guided Hidetada's troops.[2]
Asano's garrison realized that their attackers were far from support or reinforcements, and met them in battle at Kashii, near Wakayama. Okabe and Ban were killed in the battle, and Ōno was consequently forced to retreat to Ōsaka.