Anyone can shoot, a 70 year old man can still shoot like a 18 year old girl, but neither of them can get themselves, and their gear, into and out of the places where the shooting needs to be done.
As long as you drop them off, and pick them up, anyone can lay there and shoot, just as anyone can do reconnaissance, as long as you envision that as merely lying there and looking through binoculars. What makes soldiering something that not everyone can do, is everything before and after being at the spot where you want to shoot the bullet from, or push the button, or observe activity from.
Hey, they claim technology will make all those points moot. Super Soldier and robotic mules will close the gap. A women will have the strenght of 7 men and be able to run all day long with a full combat load. They spent 3 billion bucks on that program.
What an Army - from macho to queer with the stroke of a pen - now it’s lesbians take the point