Released under the title Uchuu no Senshi, the material was also adapted into an Anime in the mid-eighties. The 6-part series also takes it's liberties from the original book, but stays on target more often than not. However, some scenes (especially in the basic training) have been changed to allow for a younger audience, I suppose.
However, it does a great job of portraying the mechanized infantry as they are described in the book, the "mech" design is neat. However, one does see the age of this series, the animation is stocky in places, animations are recycled quite often, and the style is very basic. I do recommend the series though.
AFAIK, it was only released in Japan, on Laserdisc and Video.