We just played a game where we werent sure what happened when a defender won a battle. We know that the main defender would place 2 influence cubes in the city. However, does the ally also get to put 2 influence cubes in the city?
There are two options: the defender wins a battle where there was no attacker, in which case the defender gets two influence cubes in the city that was defended. Second, the defender wins a battle where there was an attacker, in which case the defender gets the battle tile (and the victory points). In both cases, any allied defenders get nothing.