Terrain is laid out in a 3x3 grid, setting the board for the game, and various game effects are written on each terrain card. In addition to those nine zones, each side has an HQ zone that is adjacent to all three of the zones on his side of the table. Movement is to an adjacent zone - no diagonal movement is allowed. The game ends when the enemy HQ is taken, or if a time limit is reached. The special cards are very well done and varied enough to give the game a high replay value.
Supply drives the game.
You can move units without supply, but you need it to attack. You also need supply to fly planes, bombard enemy positions, rebuild damaged units, use full defensive power, and buy extra cards from your deck. Wise allocation of supply is as important as good tactical ability. The Germans start with more supply, representing the fact that they're dug in, but the Americans get more supply each turn. You have to pay the point value in supply to bring a unit into your HQ, from which it can move out onto the battlefield.