The game is actually quite simple to set up and play. Each player decides which side they want to take. Then they select between 80-100 points worth of infantry, armor, aircraft, and crews to make up their battle deck. The rest of the cards are set aside and not used. Each deck has 284 points worth of units, ranging in value from 2 for a tank crew to 21 for a Tiger tank.
Iconography on the cards will tell you if the card you've picked needs a crew, and if so of what kind, and also has other icons on it to show how effective they are against other kinds of units.