There was that James Bond film where they had a big fight on the space station with moon lasers, and there was that one guy who was even more dangerous than the moon lasers because he had the power of biting people with his teeth.
This is the problem with wars in space, you go through all the fuss of creating interplanetary travel and weaponry, carting it all up there, and then some geezer just turns up and bites you on the arm really badly.
Other problems with wars in space:
- Wouldn't know if you were holding your moon laser upside down or not, because you might be upside down.
- Space is very big. You could fire a nuke at someone and they can just stand far enough away to move out of the way or have evolved into a form of non matter based consciousness before it arrives.
- Time is space, which would make it a time war and then you'd get sued by Doctor Who.
- Americans would still accidentally bomb a hospital.
- If aliens got involved we'd probably lose. We're actually not very good at wars. We have multiple countries that have managed to end up losing a war against themselves. Australia literally lost a war against some Emus that didn't even now there was a war going on.