That would be "soldiers" and "army". Which sounds less cool and less mystical. And then again, the terms cover aggressors too. So you want the kids to distinguish between defensive and "take over the world" army in the first place.

People who identify with "fighter" will join any army, but especially attacking army. It projects strength and aggression. Pretty much all conquerors to be including genocide first taught young men to have "warrior" values.

I don't specifically want to raise kids to be soldiers either, tho they may join. In that case, army is quite capable of shaping recruits into the mold they need. And it is different mold then civilian life requires.