Sorry, I've dug through a couple of boxes (like I said, several years ago) and can't find it. I'm pretty sure the pregnancy issue was also covered in a RAND paper, but there were some interesting complications with that specific paper: the study was only included in an early draft... pretty politically charged issue. If you want to look for it, I believe it was written in the mid to late 90s and the final draft was prepared for something going on in Congress.
> ...but I'd like to see an analysis of the field effectiveness of units in combat as well as training.
That would only be an effective analysis if a long term trial were to be conducted, 10 years might be enough. The context of this conversation is kind of funny, because the USMC's success is rooted solidly in homogeneity - the long term impact is the real point of concern.
> ...I'll note that plenty of female Marines (and soldiers) have over the past decade and a half of war operated effectively as light infantry in high OPTEMPO environments...
Not really. I can't really say it without sounding like an asshole, so I won't try :) The infantry experience is very different, and comprised of much more than simply being in a non-permissive environment - not comparable.
> ...the enemy doesn't care if you're an officer leading an infantry platoon or a logistics convoy.
Oh yes they do, it would be totally insane to conduct an attack on an infantry platoon in the same way you would attack a logistics convoy. In 2006 my unit took over a formerly national guard AO, they got direct fire pretty regularly - and so did we for the first few days. After the locals figured out that we weren't national guard, we experienced no more direct fire - just IEDs and mortars. I don't think it is a stretch to say that females would likely be treated differently by the enemy.
> Unplanned pregnancies...
I guess I was too subtle, I wasn't talking about unplanned pregnancy. This sort of behavior is not limited to females of course, I once saw a guy shoot himself in the foot, but the pattern of predeployment medical issues is much clearer with the females.