Another amazing chapter @CasualWanderer82. We found out in Chapter 1 that King called Patrick "Pawn", and we are reminded of that again in this chapter. But, "pawn" has three meanings, two of which are relevant here. As a chess piece it is King using it to identify Patrick as one of the "Kingdom of Men". It also means someone who is being used by others for their own purposes. In this context we see Patrick being used by his mother (in Chapter 1, when asked if his mother would worry if he went with them, he responded, "she doesn't care") to keep King in a meaningless marriage and a sole destroying 'career'.
In flashbacks we see Pawn catching glimpses of King and recognizing that it was death that finally brought him peace. We also saw King's love and understanding of Pawn as the thing that kept him in the marriage. In the scene of Pawn on the roof, King can see himself in Pawn, and also his love that wants to protect Pawn.
Lost in the woods, Pawn is stripped bare physically and emotionally through which he develops an understanding of himself while watched over by the black stallion. The experience may not have helped him know his father but it has given him an understanding of the importance of the ranch to King as a sanctuary from the life he was forced to live.
Pawn returned to the ranch house having experienced some cleansing but importantly, growth.