Well they would be counters for each nation in a cup that you draw randomly. say 1 inch wooden chits with a decal on it. Icons of say a tank or Battleship if the commander effects those. If you draw a chit and don’t own that piece, you just lost that advantage that turn. The next turn you draw another chit. The used chits stay out of the jar, so the design features will balance in total for both Axis and Allies…or not. Depends on the game played…