The Russians,the Chinese and a lot of Asia don't suffer from this sort of squeamishness, and I've never seen any evidence to suggest that they risked their lives to protect their women, but of course they're savage, barbaric, uncivilised barbarians, not like us...
I don't believe a soldier would risk their life unneccessarily for a female colleague.
The qusetions that need to be asked of any woman who wishes to serve on the front line are, are you wiiling to kill for your country, are you willing to die for your countryand are you willing to risk getting raped for your country?
Because upon capture, that's a very likely outcome.