It seems some are getting caught up in the PC argument. The military, where lives are at stake, is not the place for social experimentation.
Let's look at the most obvious issue. There are physiological differences that limit women in the critical area of physical ruggedness. Even if there are some women who can do it, the military still has no obligation to rework the whole logistics chain to accomodate them.
No matter how much you want to argue, men and women are different. Check relative cardiac capacity, erythrocyte counts, muscle-mass-to-body-mass.
1) The male on average has a larger heart than that of the average female. Therefore, is able to pump more blood into the muscles for longer rates of endurance.
2) The average male has a 25% larger lung capacity than that of the average female. Therefore, the male has the ablility to pump more O2 into the body giving males more endurance also. For example, go to any neonatology unit in any hospital and ask a Dr. what type of prematures babies have the best chance of living, and they will say that females do, because the females do not have as large as lungs as that of the males, therefore, thier lungs can develop quicker than the males.
3)3. Body weight, the average males has over 25 lbs on the averagae female. Therefore, providing the male with greater advantage in almost all situations.
4) Hips, on average women have wider hips than males making their center of gravtity lower to the ground and causing them to have more of a sway from side to side when they run. Therefore, making running that much harder on females than on males.
5) Upper body strength, if a women and a male were to stand side by side and both were to put there arms straight out, the males arms would be a straight line, whereas, the females arm would form an "X" like shape. Try this with your wife or girlfriend, females arms bend-in at the elbow whereas a mans does not. This gives the male more leverage and more upper body strength in areas such as pull-ups and push-ups.
There are several more areas that I could go into, such as body fat percentages, muscle mass ratio's, red blood cells, white blood cells, smaller bones, etc. but I think I have made my point.
Now, understand .. I am not against women in the military. While I've never been assigned to any units that allow females, I have worked with, and in some cases against, them in many enviroments under many circumstances. What I am against is women serving in combat arms MOSs. For those of you that support allowing women in combat arms, I pose these questions.
Could you address the dynamics of small units and the manner in which they would be affected by the introduction of females?
Can a unit benefit by their [females] addition?
Are these units handicapped by their absense?