Girls & Panzer: Kore ga Hontou no Anzio-sen desu!
Watch Girls & Panzer: Kore ga Hontou no Anzio-sen desu! full episodes online English sub. Other tiles: Synonyms: Girls und Panzer OVA, Girls und Panzer: This is the true battle of Anzio! Synopsis: The story is based on the battle against Anzio High School.
More info: Myanimelist, Wikipedia