 Through well-coordinated guerilla tactics, Tatsumi managed to fight his way to Kashiwazaki.Joining up with Matsudaira Sadaaki in Kashiwazaki, he continued to fight against the new Meiji government's army, first independently, and then in concert with the Nagaoka Domain.However, when Nagaoka was defeated, the Kuwana forces retreated further north, to Aizu Domain, ruled by Matsudaira Sadaaki's birth brother, Matsudaira Katamori.