Hell, you don't need experience working with them - you only need to see them in the gym, struggling with ridiculously small weights.
Yup... women can’t carry a 50 lb backpack, ammo, an assault rifle weighing a few pounds and doing a hundred mile march.
Forget what you saw in G.I Jane. Women are smaller and lighter than men and have less physical strength. Amazon warriors are pure legend.
Some things are better left off to men not because of sexism but simply because men do them better. Like fighting wars.