I think it's campaign L5 and it's turned into a boring grind. It's got an okay size field in the middle and starts you with barracks and factory.
Infantry units move across the field to quick. By the time you get an artillery piece out a bazooka can move from outside range by a good three moves be right next to the artillery and light it up. With the speed that all the soldiers can achieve there is rarely a value to any of the mechanized units.