In War for the Planet of the Apes, the white ape Winter is on Caeser's side. After the first battle, they capture some soldiers and the traitor gorilla Red. Winter escorts him out and eventually claims he got attacked and Red escaped. Later in the movie, we see that Winter also joins the humans, and he explains that
Red promised me the Colonel would spare me if I joined him
Me and my mates got into a discussion on the subject of whether Winter had allowed Red to escape or not.
I seems strange to me that he would have, since by then he wasn't that scared of the humans, and also because he would let the other ape run away but still linger on for a while after Blue Eyes (Caeser's son) returned.
However, the way it is shown in the movie, it seems that Red was the once who convinced Winter to escape, and that it was all a big plan from the start.
Having only seen the movie once, maybe I just missed something. Anyway, did Winter cave under fear and join the humans' side when he let Red run away, or did Red actually manage to escape and Winter just decided to join them later?