Iroganeyama Fort

History

The so-called 'Battle of Komaki-Nagakute', 1584, was a series of conflicts taking place over the better half of a year stretching between and around Komaki and Nagakute which are 20km apart. As part of that campaign, Ikeda Tsuneoki, fighting for Hashiba Hideyoshi (Toyotomi Hideyoshi) , marched out toward Okazaki, the old Matsudaira home-base, and was met in pursuit in Nagakute where Tokugawa Ieyasu had, coming from Komaki with haste, taken up position on Mount Irogane. On Iroganeyama, where Tokugawa Ieyasu took up position and observed the battlefield, was erected a large golden fan battle standard, along with the usual temporary fortifications.

In the battle of Nagakute, Mori Nagayoshi, on the Hideyoshi side, attempted to flank Ieyasu as the latter deployed to support allied forces led by Ii Naomasa. However, Ieyasu avoided the flanking maneuver by charging forward, and Nagayoshi was shot off his horse. Naomasa's expert command of three thousand musketeers further saw to the collapse of the Hideyoshi forces, and Ikeda Tsuneoki's head was taken. When Hideyoshi arrived with reinforcements, Ieyasu retreated to Komaki.

Visit Notes

Iroganeyama-toride is a fortification and encampment site in the Yazako district of Nagakute Municipality. The small mountain is now the Mount Irogane History Park (色金山歴史公園), and the site is designated as a national historic site. There is a large stone, the shōgiishi ('camp stool stone'), where Tokugawa Ieyasu is said to have perched, at the top of the hill. There is also an observation terrace built to suggest a medieval fortification, though it is a work of fantasy, which has a faux-reconstructed watchtower (mogi yagura). I came here as part of my walking tour (which would've been a cycling tour except the Nagakute Historical Museum in Kosenjō Park which loans bicycles was closed that day) of battlefield, fortification and encampment sites in Nagakute, and I found the giant lattice work of support structures for the wooden terrace with the watchtowers atop to be like something out of a themepark. The murals and monuments gave the place a pseudo-sacrosanct air. It was all very mogi, but quite engaging, and I'd recommend it as part of a casual pilgrimage for history fans.

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Gallery

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  Reconstructed watchtower
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  Kubizuka (head mound) for the battle of Nagakute
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  Ieyasu's 'camp stool' rock
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Castle Profile
English Name	Iroganeyama Fort
Japanese Name	色金山砦
Alternate Names	Iroganeyama-jinsho (色金山陣所)
Founder	Tokugawa Ieyasu
Year Founded	1584
Castle Type	Mountaintop
Castle Condition	No main keep but other buildings
Designations	National Historic Site
Historical Period	Pre Edo Period
Features	turrets
Visitor Information
Access	Bicycles for rent at Nagakute Historical Museum, 4 minute walk from Nagakute-Kosenjō Station on the Linimo
Visitor Information	24/7 free; park
Time Required	60 minutes
Website	https://www.city.nagakute.lg.jp/soshiki/kurashibunkabu/shogaigakushuka/4/iroganeyamarekisikouenn/1128.html
Location	Nagakute, Aichi Prefecture
Coordinates	35° 11' 9.53" N, 137° 3' 16.27" E
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Admin
Added to Jcastle	2023
Contributor	ART
Admin Year Visited	Viewer Contributed
Friends of JCastle
Kojōdan
Umoreta Kojō

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(one vote)

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