[Lymond]

The answer to your problem is quite simple. Females can do well in any position, but given the conditions you set, here's what I propose:

Of the current batch of wives/girlfriends, pick the strongest one and designate her the mule. If you have any heavy equipment to carry, she's your man (so to speak). Also, give her the best armor, because at the type of places you hang out, you need a woman who can take a punch. If she knows how to cook, all the better.

As for the other two, treat them as connon fodder. Send them into the front lines to distract the enemy and have your guys attack as you see fit. The girls should have high charisma and dexterity- you want them to attract the enemy, but be quick enough to dodge their advances. Intelligence and wisdom aren't a priority. What's that you say? You're afraid they'll get killed off? Not a problem. When that happens, the guys can meet someone else. The bonus to morale will surely offset any annoyance at having inexprienced bimbos around all the time.