Please help me find a anime?

I;m looking for a sf anime , it;s about a war , and yeah there are starships involved but it;s not gundam !!!! or code geass ,,it;s about a guy that is kinda lazy , just mellow XD and he is young and he is given the title of a caotain which was unheard of. Anyway he was expected to battle with a super strong force and everyone expected him to loose , the mayor of the planet or city who hired him included cuz he made a deal with the enemy , anyway he made an awesome trick with the spaceships he baited all the enmy ships to come close to him , and at asome distance he ran leaving behind ships old that have a implode system , he won againts that impery which was unheard of and made a war hero , but he has to run cuz now everyone wants to kill him XD , he had no intention of battling that impery but he met people and somehow ended in the middle of a political conflict.