Our western cultural concept of women as weak and defenceless is a distorted view that is not supported by history - almost, not quite.
That's actually a misrepresentation. Western society instead views women as physically weaker but mentally more mature/sensible/stronger.
This is actually supported by all available data.
And BTW, if you measure the gender ratio of serving soldiers, throughout history and today, that ratio isn't 1:1 ... I don't know what that ratio is.
10:1? ... 50:1? ... I don't know.
If you want to girls - go get the terrorists!!!! - great, I'm all for it.
And in similar vein: if you want to men - go get terrorists!!!