Girls & Panzer Movie: 3-pun Chotto de Wakaru!! Girls & Panzer / ガールズ&パンツァー 劇場版 3分ちょっとでわかる!! ガールズ&パンツァー
A 3-minute intro screened in theaters at the start of the movie. It recaps the TV series to give viewers some context before watching the film.
(Source: AniDB)...