Norakuro

Norakuro is a black dog enlisted in the "Mokenrentai" (Fierce Dog Brigade), an Imperial army of dogs fighting in a war against the enemy Monkey Army. Norakuro is a stray black-and-white dog in an army of white dogs who blundered his way while being a Private Second-Class. This series was relatively faithful to the comics. One big change, however, was the addition of the army nurse Miko, whom Norakuro had a crush on. For this series, Norakuro was voiced by Nobuyo Ooyama, who would later become noted for voicing Doraemon. (Source: Cartoon Research)

Official website :https://eiken-anime.jp/works/%E3%81%AE%E3%82%89%E3%81%8F%E3%82%8D/