On a different note, ive made a Dragon 2 model. How can i upgrade my undamaged dragon 1 battalion to a dragon 2 battalion?

Thanks Rodia, my tank has an insufficient engine [:(]. Btw was there a way of telling this when i was building it, or is there an easy equation to remember? Im surprised the game didnt advice me of the issue in the design phase

Hi all
I'm a few hours in and have built my first medium tank. However it cant make a normal move, only a strategic move. It has ap but wont allow any other movement. Have I somehow given it too small an engine to move or is there something I can do?