Women think different than men.
The physical difference are easy to see and measure, hard to deny.
But the mental / psychological differences are just as real but easy to deny, pretend away.
In fact, in our modern equity / equality society, empirical evidence that suggests there are differences is suppressed or ignored. For example: https://www.amazon.com/Bell-Curve-Intelligence-Structure-Paperbacks/dp/0684824299
Just one example: Women tend to be statistically very average, i.e. not much variance and most women being near average intelligence. They have a very steep and narrow curve right at average. Men have a broader and flatter curve where you have less average and more dumb but also some that are extremely intelligent.
But today, any discussion about the difference between people may that be based on race or sex, is taboo.
There are many other differences that have been detailed over the years in the “manosphere”.
They are generalizations which do not apply to every single woman but are a reasonable “template” for men who are confused by how women behave:
—Drama—hate “boring”, like “excitement”. This is a problem for advanced societies because when everything goes well they are “boring”. The “manosphere” advice for dating—keep it moving, motion is emotion—go from place to place instead of staying at one place.
—Social acceptance. They care a lot about what their friends think—about everything. Many will change their behavior—and even dump boyfriends and even husbands—if the friends don’t approve.
—Social perception. Most men enter a room full of people and do not sense the emotions or “vibe”. Many women are highly sensitive and see an emotional “jungle” with every person broadcasting—almost like mind reading.
—Leader of the pack. That is what men need to be to attract women, but the pack can be as minor as the local chess club. Whatever it is, women want and need leaders.
There are a lot more.
Establishment “science” won’t go near this stuff.
Which makes them largely unsuitable for combat roles in military organizations.
Even before considering critical differences in strength, speed, and aggression, military forces have been optimized over the last 10,000 years or so around the psyche of young men who are sexually frustrated and can be channeled into fighting an enemy. More importantly, the men can be organized into stable hierarchies where orders will be followed reliably, and they can be ordered to stop fighting when no longer necessary.
Women are motivated quite differently than men and we have no idea how they might be trained and organized into viable combat units - except that it would be very different than how men are organized into combat units.
Placing women into male-oriented combat units degrades the capabilities of those units and results in higher casualties for both men and women.
It has been tried before. War is a merciless teacher. It just does not work, and no serious military force keeps women in combat unless they have run out of men. We are not serious and will pay some expensive tuition in the next "Very Big War".