Having some form of boarding craft, and probably starfighters to accompany them, sounds like a good idea. Otherwise they'll be little in the way of personal combat.

Though, I don't really see a point to swords when a burst from a hand pistol would be faster and more deadly. Maybe a long knife or short sword at most but not a sword. At least, not unless you include some sort of "magical shielding". Maybe they can take a burst or two before going down for a brief recharge cycle. This would allow those with melee weapons get close but not just waltz all willy nilly across the battlefield. It might even make bows useful, as rune carved arrows piercing through the magical shields in a way that mere bullets couldn't.