Lord Longen sends his respects today! My squadron is at your disposal, sirs...
— Samurai Sergeant
United Cities Reinforcements is an Event that will trigger in response to the Holy Assault, Holy Nation Assault (Inquisitor), Jonin Assault, Retribution Of God, and Wrath Of God events, as long as the Player is an ally of the United Cities and Emperor Tengu is alive and free, and the player is NOT an ally of the Anti-Slavers, Holy Nation, or Shek Kingdom.
Once triggered the United Cities will send reinforcements from the location they own closest to the player's Base. While they will move faster than most hostile events, they can still arrive too late if the player's base is closer to the hostile event's spawn location than to the origin of the reinforcements. These reinforcements will consist of 1-2 squads, each made up of 1-4 Samurai Conscripts, 5-8 Samurai, 1-3 Samurai Scouts, led by a Samurai Sergeant.
Once the reinforcements arrive, they will give a short speech, and then start patrolling the player's base, attacking hostiles, defending the player's characters, and healing wounded allies.