ubi bene ibi patria // vidi perfutui veni
And it doesn't make it easier interpreting the special rules the only way I can figure they could work-- which is that the Rebels start the game with 2 of the Carthaginian banners already in their possession (which, yes, would mean they only need 4 more to win).
It's Carthaginian banners which will be going "back and forth" if the camps change hands multiple times.
I just played that scenario and it was pretty clear to me that the banners change hands as Kduke said. When i had to retreat from a camp i lost a banner and the Rebels won a banner. When i took back the camp the rebels lost the camp banner and i took it again.