Combat is not only simple to perform but the mechanics are unique. First of all, enemy units have to be targeted according to their quality and units can shoot only at units of equal or less quality unless no other targets are available. This makes combined arms possible since you can't shoot at tanks supported by infantry. Defenders fire first, followed by the attacker. Like most of the other game systems, the combat procedure is spelled out step by step on the player aid chart, making it not only very easy to learn but eliminating the always-annoying rule search in the middle of a battle.
Supply is handled by simply tracing through friendly-controlled areas to a friendly mapedge.
Other than the ineffectiveness of the German artillery, the Germans do not have any other supply problems such as fuel shortages as they did historically. While I'm talking about what Ray left out of the game, it would be worth mentioning weather and air power. As usual, the bridge rules can be used by the Allies to hamper German advances. Although a defender can be attacked only once per turn, the impulse system lets you create reserves to exploit a hole that a successful attack creates. In this regard, timing of attacks and careful positioning of attackers of reserves take lots of thought.