At the top of the cards, you can see two stamps. The first stamp determines when you can use the card: there are attack cards, which you can use in your own turn, and defensive cards, which you can use in the opponent’s turn. The second stamp specifies when you can play the cards within the turn: they can be preparatory, action or closing phase cards.
Using Artillery Tokens, you can carry out greater destruction in the enemy’s army, and you can also enhance the defensive capabilities of your artillery units. Using these tokens, you can carry out an additional artillery action, and thus you can involve one of your previously passive artillery units in an ongoing clash. You can also use them to carry out artillery strikes against the opponent in case of an enemy attack.