An army with the Take and Hold Force Disposition facing one with Purge the Foe is dealt Immovable Object as its primary mission.
The opposing army is not playing the same mission: it is dealt Unstoppable Force. Reading only your own card is how a game gets lost from in front.
Take-and-Hold against Purge-the-Foe. Central-objective control pays at the end of every one of your turns. Battle rounds two to four pay heavily per non-home objective at the end of your Command phase; the fifth battle round pays the same rate at the end of your turn instead.
Primary scoring is capped at 15 victory points in a battle round and 45 across the game.