I read an article which said that a survey of women who underwent military training underperformed against their male counterparts in just about every aspect of the training. I think this only applies to women from western countries where, generally speaking, women are smaller in body size than the men. In many eastern countries, women are as big as if not bigger than men. Perhaps one reason is how women are brought up in the east and the west. In the east, women worked alongside the men in the fields, women did a lot of hard labour in the home, so it's not surprising that women in the east are as big as if not bigger than the men. In the west, the women tend to lead a more sheltered life, therefore end up being smaller and weaker than the men.