Women have just as much right to fight for their country as men. If they want to fight, are willing (and capable) of going through the training, meet physical demands, learn to use guns and put their lives on the line then let them. I really hate this mentality some people have that because a few women failed to pass the test or a few solider who happen to be female ended up in some bad situations that suddenly all women can't do it. Yes cause we've never had men who couldn't pass the test or male soldiers who never fucked up.
I'm not saying just let them in because they are women, I'm saying let them in if they have proven they can keep up. If someone can't keep up being a women has nothing to do with it, it just means that individual couldn't do it. We didn't suddenly stop having men serve and just replace them with machines cause a few guys couldn't pass.
Anyone can lift heavy shit after they've been through the training the military puts you through. You might not be able to before going in but they're gonna build you up and try to make sure you can once you get out. And hand to hand combat? Not UN-heard of but I'm pretty sure most of our fighting is done with weapons like guns, tanks and jets so if they have good aiming they can probably take down a lot of opposing forces pretty fast. Heck some of our snipers ARE women.
Plus both genders seem to be good at different combat roles, turns out women have better eyes for being a sniper because they see further and because their extra X chromosomes let them see more shades of color so they see through camouflage better, while men see in the dark better thanks to the Y chromosomes. Men generally have 30% more muscle so they can lift heavy shit while while women generally have a 30% higher pain resistance so they're less likely to go in shock and die when shot or stabbed (makes sense, giving birth is fucking painful so they'd need the resistance). So really wouldn't it make more sense to have the best of both worlds? Both genders have their own advantages and disadvantages and working as a team can do a good job of helping each other work around their disadvantages.
An army with the advantages both genders bring to the table is more powerful then army with just only men or women serving.
It's funny that this is still a debate today in the more "civilized", "enlightened" and "hi tech" age. Countless ancient civilizations have allowed women to join their ranks after they've passed training. They weren't common but they were there, fighting with the men. We have women who are in the police and have put themselves in harms way like any male cop would to protect us from crooks and arrest/kill them yet we still argue about if they should/can fight when several have already proven themselves and made it in. They've gone through the same training as the men and some of them passed with flying colors. Anyone of them could easily snap our necks in half like the men.
TLDR version: Just do with them that you always did with the men, let the ones who pass the training join and fight, they've proven they are willing to fight up to and including putting their lives at risk. If you refuse to let someone in refuse them because they as an individual couldn't meet the demands, not because of their gender.
