Women don’t have the upper body strength to cut it in combat. A retired Army officer told me 20 yrs. ago that
there were lots of women in his outfit. When they got the
“bugout” order; they simply could not bug out because the
women couldn’t lift the many heavy items on to the trucks
in order to bug out. So - they didn’t bug out. Period.
I don't doubt that someone tell you this, but I don't believe it. The scenario that you describe only fits the Battle of the Bulge and the Chinese Intervention in the Korean War. The only units that contained female were hospital units and the only females were officer nurses. Loading up the hospital was not their job, although they could certainly have helped and no doubt did so. I don't think this happened.
I don't remember if any nurses were captured in the Korean War, but if they were it was only a few. Nurses were captured in the Philippines in WWII, but so was every American unit in the Philippines. Some medical units were overrun in the Ardennes and nurses became POWs. The Germans didn't really what to do with them and they were put into civilian internment camps.
The point is that our gender integrated military has never had to fight in circumstances where large losses including women KIA's and POW's would occur. When that happens, you can be sure that rapes, beheadings, and sex slave auctions will be on You Tube for everyone to enjoy.