Are they random housewives or trained soldiers with appropriate weapons. We're talking about everyday normal people.
Take 10 random men and 10 random women, which group do you think will have more people able to punch, throw far, lift heavy objects, carry heavy packs, load and use guns, build temporary shelters, dig.
It's got nothing to do with sexisum and simply biology and how woman and men are conditioned and raised .
Many women are capable of being soldiers and fighting, but when recruiting your army from civilians, men are always gonna be the safer option.