meh.
if a woman is fit enough (and has met exactly the same entry standards, and carried out and passed, exactly the saem training as her male peers, the only reason why she is excluded from the front line is male 'instinct' (pah - the same 'instinct' that is trained into you and out of you during basic and professional/ trade training.)
there have been papers and papers on this, and it always boils down to what the men think.
i'm not going to be able to post an awful lot on this thread, as it's one of the subjects that gets me dragging my soapbox out. 
i wanted to join the marines when i was 18, largely to prove a point.
(i know, dumb reason, but really.) of course, they wouldn't take me, so i took a nice ground job. during basic training, the men would run one way round a course, the women would run the other (and the direction would be alternated). if i had a pound for every bloke who accused me of cheating because i was fitter and faster than he was, i'd have been able to buy all the drinks in the bar.
the unsuitable women would get dropped like a hot potato in exactly the same way that unfit/ unsuitable blokes are.
c'mon wingdad, i know the regt is the last bastion of sacred male ground in the raf, but i know a fair few women who could cope quite easily if they weren't barred because they haven't got a penis.
aaaaargh.
i spent 16 years listening to kitchen sink jokes, and seeing porn on office walls day in day out. (and that daft bloody silly mare herc pilot who fell into the gi jane trap and refused to sleep in the female accom on ops because she might get contaminated by the pen-pushers.... not all gender discrimination in the military comes from men)
and you lot bimbling on about male officers feeling the need to save female soldiers first - we have got female officers, you know. but yes, other than the rank thing, that's what it boils down to.
jeez, i was even told i wasn't allowed on the mountain rescue team ffs. not because i wasn't strong enough to carry all the kit, not because i wasn't fast enough, couldn't map read in the hills, deal with bad vis, no, no, no. i couldn't join the mountain rescue team because the team member's wives wouldn't like it. 
you'll be pleased to know that little rule was bust wide open a couple of years later.