That's a toughie. Maybe we shouldn't look to ANYONE except ourselves, just for the sake of not locking ourselves into any past figure's philosophies who may not match our own, just because the writers of history happen to think he or she was a great dude or dudette.
At least we should really really closely examine their philosophies, unlike the folks who seem to think it's cool to walk around wearing t-shirts with Che on them.
Having said that, I've always been a fan of Cincinnatus.
ETA: As far as the 'War on Terror' is concerned, I personally feel we should look to the Mongol hordes and the military leadership of Subedei, but that's just me.
