Please explain which 'hostile military' the illegal aliens belong to."
Have you found THE loophole for hordes of invaders to infiltrate the United States of America?
Do you mean to say that an invading "hostile military" can only be regarded as such if they are wearing fatigues and carrying arms?
No. I'm saying that it's going to take a LAW ENFORCEMENT approach to solve, and that a military approach is off-limits unless you're proposing to invade Mexico and remove the kleptocracy that runs that country. (An interesting idea, actually.)
Do you mean to say that an invading "hostile military" can only be regarded as such if they are wearing fatigues and carrying arms?
Yes. That is what "hostile military" means.