Buki yo Saraba
English name: A Farewell to Arms
Genres: Action, Drama, Sci-Fi
Type: Movie, Episodes: 1
Aired: Jul 20, 2013
Studio: Sunrise
Source: Original
Rating: R - 17+ (violence & profanity)
Synopsis:
Based on a story by Otomo (Katsuhiro), it's about a ragtag group of hard-talkin', power suit-wearin' men tasked with disarming automatic tanks in a post-apocalyptic Tokyo.

(Source: Crunchyroll)