Personally, I think any grunt who gets distracted in battle merely by the presence of tits has no business being there. I wouldn't want to be within a click of any such unprofessionalism. Give me the chic who can double-tap.
That said, I have no problem with the way the IDF and the Marines go about training and managing female soldiers. Full basic and some AIT, and only then trained and in a specialty other than Infantry.
Trust me when I say that with many specialties, the specialists do indeed wind up in the thick of the suck. I know this personally. With a shockingly rapid pace of movement and the growing dependence on technology in waging modern warfare, this is unavoidable.