The King's Son is a main story mission in Red Dead Redemption 2 given by Charles Smith, as part of Chapter 6.
It's the 86° mission in chronological order of the RDR2 story mode, played with protagonist Arthur Morgan.
The King's Son - Mission Details:
Upon learning that Eagle Flies has been captured by the army, Arthur and Charles infiltrate Fort Wallace to rescue him.
Mission Objectives
Gold Medal Objectives (100%)
The following are the Mission Objectives required to obtain the Gold Medal in the mission "The King's Son":
- While infiltrating Fort Wallace, headshot every soldier blocking your way to Eagle Flies
- Kill 15 enemies while escaping in the canoe
- Complete with at least 80% accuracy
Note: You must complete all Gold Medal requirements in one single playthrough of the mission.
The King's Son: Mission Info
- Mission Number 86
- Story Chapter Chapter 6
- Mission Giver
Charles Smith - Mission Type Mandatory Mission
- Protagonist (Playable)
Arthur Morgan - Location Fort Wallace (Cumberland Forest, New Hanover)
- Featuring
Eagle Flies 
Rains Fall 
Canoe