I love card games of all types. I say this without reservation. The game has two kinds of cards - Personality and Action.
Personality cards each represent a soldier, artillery piece, or vehicle.
Typically each player has about 10-15 of them, representing some variety of infantry squad with appropriate weapon mix, sometimes with armor support. Movement cards allow one to move forward or backward relative to the enemy. The enemy, in the interim, can also discard terrain cards on your moving groups, allowing them to blunder into streams, marshes, or minefields, among others. The Germans, for example, have a five-card hand, but can discard one card every turn in addition to taking actions. Japanese get their Banzai charges, the Italians can surrender en masse if the opponent plays right, and so forth.