Ok let me clear this all up for you and anyone else who has questions about this controlling multiple tanks thing. There is no possible way to control the tanks seperatly. There is a way to control more than one tank at once. First you id one tank with the specific rom chip that goes to it. Then turn the controller of NOT the tank and insert another rom chip, id the second tank. So on and so forth if you have 3 or 4 tanks. Now you can control the two tanks at once but they will have the same movements. So if you had a gang of 5 tigers you could id them all to be controlled under 1 id. So you could set up huge and i mean huge bratalions of tanks.
Hope this helped