At the Battle of Tsukiokano, Ecchu Province, taking place on November 3, 1578, the Oda's army defeated the Uesugi's army, where Nobuyoshi distinguished himself by capturing Imaizumi-jo Castle which was the Uesugi's foothold in Ecchu Province.
天正6年10月4日（1578年11月3日）、越中月岡野の戦いにおいて織田軍は上杉軍を敗走させたが、この時信吉は上杉方の拠点今泉城(越中国)を攻め落とす手柄をたてた。