This map is incredibly short and easy, especially considering how far into the campaign it already is. You have a few units less than the enemy, but double the resource income. Just fall back a bit to your facilities, let the enemy charge and take good care of your planes. Use your resources to repair and to build Stationary AA where it's needed in the beginning. The Stationary AA is useful as passive shield for your artillery later when the enemy planes are dead. A few turns into the match, build Heavy Artillery and Gotha Bombers. It'll be over in no time.
