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Battles, incidents, and historical events related to Japanese swords
3 events
13th day of the intercalary 6th month, Keicho 20 (7 August 1615)
Issued by the Edo shogunate in the intercalary sixth month of 1615, just after the Summer Siege of Osaka, it ordered daimyo to dismantle all castles but their seat. Some 400 castles are said to have been razed, sharply reducing the number of castles.
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Keicho 20 / Genna 1 (1615)
In 1615 the Toyotomi fell in the Summer Siege of Osaka, and the era name was changed from Keicho to Genna the same year. Called Genna Engu, 'the laying down of arms', it is regarded as the starting point of some 250 years of peace.
1601 (Keicho 6): instructor to Hidetada; 21st day of the 3rd month, 1621 (Genna 7): instructor to Iemitsu
Yagyu Munenori became sword instructor to the second shogun Tokugawa Hidetada in 1601 and to the third shogun Iemitsu in 1621, establishing Yagyu Shinkage-ryu as the shogunal house style; he later rose to daimyo rank.