How do the Diplomacy cards work?
Basically, having a Diplomacy card grants that player, and only that player, the ability to gain additional troops in any battle in that province, provided that the card owner is either directly attacked or is himself attacking. The troops granted by the card appear only during the battle; any that survive are immediately removed. All the troops (regardless of losses) re-appear for the next battle. Note that the player who has the card cannot “lend” these troops to an ally, whether attacking or defending. One final word is that these additional troops don’t help if the owner does not have at least one of his own units (Infantry, Cavalry, or Catapult) in the province! You cannot use these additional troops alone to either attack or defend.
