Field is a nighttime map, with tunnels connecting the two bases for infantry battles and a wide open field complete with waterfall and requisite farmhouse in the field. The level is about as balanced a map as you can get. Hunt your enemy’s harvester to keep their finances low and then organize a frontal attack to overwhelm the base defenses, although be sure to keep an eye on the back tunnels. A quick strike group of three or four infantry can spell disaster.