Thanks... It sure looked like a rudder on the back but I wasn't sure.
So far I've found the tankettes quite useful. Cheap, good speed and protection from small arms. If they can cross rivers or function like an assault boat then even better but I'm guessing that they wont work amphibiously in the game. I'll still give it a try.
Had the game 2 days and already I've discovered something completely unknown to me. Can't wait to see what else I'll find.
Congrats on having your model selected.