Falcon tanks with fire dragons will melt any tank in the game, when used properly the falcon is a pig to kill, and you can use it to get in close range to the enemy rear armour
Make sure you give your falcon some of the upgrades for survivlbilty, but always try to move as much as possible.
NEVER try to take on a guard gunline in a static shoot out, you will lose. Pick your fights carefully to pick off pockets at a time.
Scorpian squads are also very good against the infantry, and useful for assulting their lines, their stealth and general sneakyness will see you through if you cover hop