{{Campaignbox Siege of Osaka
The Battle of Kashii (樫井の戦い) was the very first battle of the Summer Campaign of the 1615
Siege of Osaka
The was a series of battles undertaken by the Japanese 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 ...
, near the beginning of the
Edo period
The or is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's 300 regional '' daimyo''. Emerging from the chaos of the Sengoku period, the Edo period was characteriz ...
in
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
. It took place on the 26th day of the 4th month of the
Keichō
was a after ''Bunroku'' and before ''Genna''. This period spanned from October 1596 to July 1615. The reigning emperors were and .
Change of era
* 1596 : The era name was changed to ''Keichō'' to mark the passing of various natural disasters ...
era.
As the Shōgun's Eastern Army prepared to renew the siege begun the previous winter, the
Ōsaka
is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of 2.7 ...
garrison sallied forth, ambushing Tokugawa forces in a number of skirmishes and sieges. In the battle of Kashii, a contingent of forces loyal to
Toyotomi Hideyori
was the son and designated successor of Toyotomi Hideyoshi, the general who first united all of Japan. His mother, Yodo-dono, was the niece of Oda Nobunaga.
Early life
Born in 1593, he was Hideyoshi's second son. The birth of Hideyori cre ...
, lord of Ōsaka, attempted to besiege
Wakayama Castle
260px, Layout of the ''tenshu''
is a Japanese castle located in the city Wakayama, Wakayama Prefecture, Japan. For most of the Edo Period, it was the administrative center of Kishū Domain, which was controlled by a cadet branch of the Tokugawa ...
, which was controlled by
Asano Nagaakira
was a Japanese samurai of the early Edo period who served as ''daimyō'' of Wakayama Domain, and was later transferred to the Hiroshima Domain.
Biography
Born Asano Iwamatsu, he was the son of Asano Nagamasa, who was a senior retainer of Toyo ...
, an ally of the shōgun. The attackers were led by
Ōno Harunaga
was a general under Toyotomi Hideyori, and fought in the Siege of Osaka in 1615. He became lord of Osaka castle after the Battle of Sekigahara. Ono led forces against those of Wakayama Castle in the Battle of Kashii, also the Battle of Shigin ...
,
Ban Naoyuki
, also known as , was a Japanese samurai general of the late Sengoku and early Edo periods. He first served as a retainer of Katō Yoshiaki, one of the "Seven Spears of Shizugatake", who went on to become lord of the Aizu domain, in Mutsu. Naoyu ...
, and Okabe Noritsuna.
Asano's garrison realized that their attackers were far from support or reinforcements, and met them in battle at Kashii, a short distance from Wakayama. Okabe and Ban were killed in the battle, and Ōno was therefore forced to retreat back to Ōsaka.