I'm quite amused by the rather sexist approaches above, which don't realise that very many women are already in the front line, and the Army's long since got past the juvenile hangups to do with it. True, they are not the heavy infantry (yet), but they are combat paramedics (right in among the infantry), and engineers (who have to go ahead of the infantry to prepare the way for them, doing things like EOD bomb disposal), and the SAS' Recce Regiment/Intelligence Corps handlers even further ahead.
And having worked alongside their officers in training, they invariably beat us in target shooting. Why, we never managed to sus - but if you need people to shoot enemy, I'd say that more than makes up for the need to grunt - questions like whether you can haul a guy out of the line are only going to arise if you don't shoot the guy who'll shoot him first. And even then they grunt with the best.