Send reinforcements to vassal
The AI will now select the player's vassals as attack targets, triggering an "Send reinforcements to vassal" mission for the player.
Within half a year, the player can send reinforcements to defend alongside local forces.
The following outcomes may occur:
A. Send Reinforcements:
1. Success — Vassal is retained.
2. Failure — Vassal is lost.
B. Do Not Send Reinforcements:
1. Vassal successfully defends alone — Vassal is retained.
2. Vassal fails to defend alone — Vassal is lost.
Whether the vassal can independently defeat the enemy depends on their population size.
Players can strengthen their vassals by sending migrants.
Overall, this will increase the challenges brought by player expansion. Previously, newly acquired territories were completely safe since they wouldn't come under attack.
Now, the more you expand, the more territory you'll need to defend.