Bad for unit morale.
Men have an innate response to protect women, instilled in them by their Creator.
In combat, that will get men killed.
If the politicians want women in combat so badly, let them have a forward unit solely of women, and let them have at the enemy.
However, if the enemy feels like raping any female prisoners, like they have for five thousand years of recorded warfare, well, them’s the breaks.
I remember reading that Israel tried this quite some time ago. If I remember the article correctly, having mixed combat units ultimately reduced their effectiveness as well as their ability to engage in combat. Also, if my memory serves me the capability was reduced by an average of 40%.