OK so this is a strategy that changes a infantry unit into more of a attack role
and makes a tank a more defensive role to "deceive" the enemy.
It would look something like this...
Infantry 7 attack 4 defense(loses + 1 in defense lines and cities) 90 cost
Tanks 4 attack 7 defense (+1 in defense lines and cities) 100 cost
ANY major or minor changes are welcome just post below. Cheers