Actually combat soldiers are required to do more. however, I dont know if this may still be a good enough reason to deny fit and capable women entrance to a wider range of combat units with a program which readies the military for it.
In the first gulf war a team of British SAS were dropped behind enemy lines with 210 lbs strapped to their backs, they were to patrol for scud launching sites.
during my service, at one time, we were ambushed and a guy next to me took a bullet and we had to carry him to safety under fire.
Now, I dont have all the answers, I cant say that these examples are physically too much for women to handle, because I honestly dont know if the entire fighting force needs to be in the 'savage' physical shape to deal with such conditions.
What I mean is, women can be fit, but do they need to wage brute force in order to complete the fighting force?
Usually the first criteria I think of that are needed of a good combat soldier, is someone who is normal, not a superman, doesnt stress under harsh conditions, and is level headed. sure, fitness is a must, the question just how much brute force are we looking for.
as I mentioned earlier, about a year ago or more, a woman was accepted into an elite combat unit in Israel which specializes in search and rescue missions behind enemy lines, I wish I had enough information about this to shed more light.