If resistance damages you, fall back and start over. If you find resistance on right or left, avoid the fight and go towards the middle. But if you are not going to be flanked, then it's an easy mission. Unless you are 100% sure you will not be flanked. (1) Turtle around the base with at least 3 AT on stand by just in case things go bad and you lose a side. The easy missions are important to treat as careful as possible, because despite being easy, they could grind you more than you would like. Keeping your army mobile is the key to superiority especially in Victory Point Missions. If something goes wrong in one objective fall back and try a different approach.
Always go commando on the different objectives. Never dedicate a large part of your army in one place. Of course some units will be lost in big fights. But never send a unit against it's counter. (2) You should stick to a 'lose 0 units' strategy. Restart and try a different angle without that loss. You should withdraw especially in a bad start, even with 1 unit loss. (1) Withdraw from the battle is your best friend (ESC -> Withdraw).
