While Quranis points out the real difference in body. Let us be real on the emotional level to. On average woman are more emotionally driven then men. Which on a battle field where one needs to harden ones self to do things unspeakable. They will falter and break down, unable to complete the missions. Or worse they will intervene trying to stop the mission. Unacceptable. There are plenty of places for woman in the military. I just would not want one beside me charging the lines.