No. You can totally do that as long as nobody has trademarked it in a similar context.
Only as long as you pass the requirements of local trademark law, which space marine arguably doesn't in most jurisdictions when used with it's generic meaning:
It's fine to call a pane of glass embedded into a wall a window, it's fine to call a certain kind of fruit an apple and it should be fine to call a marine serving on a space ship a space marine, regardless of any trademarks involving these terms.
Only as long as you pass the requirements of local trademark law, which space marine arguably doesn't in most jurisdictions when used with it's generic meaning:
It's fine to call a pane of glass embedded into a wall a window, it's fine to call a certain kind of fruit an apple and it should be fine to call a marine serving on a space ship a space marine, regardless of any trademarks involving these terms.