Mobile Suit Gundam Thunderbolt: Bandit Flower  

Kidou Senshi Gundam Thunderbolt: Bandit Flower, 特別編 機動戦士ガンダムサンダーボルト BANDIT FLOWER

In the aftermath of the One Year War, eight months later, the Earth Federation tries to obtain and eradicate the Psycho Zaku from the possession of South Seas Alliance. This is covered in a compilation film that recaps events from Season 2.