Aizu

Aizu (会津) is the old name of the modern-day Japanese prefecture of Fukushima, formerly a part of Mutsu province.

The eponymous Aizu clan (会津藩) had traditionally acted as the bodyguards of the Shogun in the feudal Japan of the Edo era. During the Boshin War, Aizu continued to resist even after Shogun Tokugawa Yoshinobu's surrender, until finally defeated in September 1868.