Set in the same universe as Galaxy Express: 999 and Space Pirate Captain Harlock, the series follows the adventures of Manabu Yuuki who joins the Space Defense Force (SDF) and is assigned to the Spica Platoon, which had been under the command of his father who died in the line of duty. A lot of philosophizing and drama mixed with space battles, explosions, and fighting.
And the space trains. What's not to love?
When you're a Cat, You're a Cat all the way From your first catnip mouse To your ninth dyin' day.