The nation known as former Soviets do not maintain front line female combat troops either. China, of course, has no need. Only desparate nations, like the former Soviet Union, are pushed to this dire extreme. Well, that and nations under the control of social utopians. The simple facts of the bell curve should demonstrate the expense and futility of pursuing cultural myth as objective reality.
Ghengis Khan had women warriors in his military. And his military conquered Asia and half of Europe.
Are you against has the same set training standard in the military for both men and women? I can understand why, because it would kill you arguement, and such standards would weed out the weaker women, but keep the stronger women who would be able to do the job without question.