Complete Monster: Captain Terrill is the bloodthirsty leader of the Redlegs, a group of pro-Union looters and pillagers who open the film torching the titular character's house to the ground and murdering his family, including his young son. Enlisted as a genuine federal authority by Senator Lane in order to dispose of any holdouts at the end of the Civil War, Terrill exercises his new power by having his Redlegs massacre a group of surrendering Confederates who had been promised amnesty and mortally wounding one of the escaping survivors himself. Terrill begins a ruthless manhunt for Josey Wales across the countryside after he escapes the carnage, with full intent to move onto Texas afterwards and continue killing rebels, coldly remarking that "Doin' right ain't got no end."
At the end, when Fletcher knows full well that Josey Wales is still alive (and standing right in front of him):
Fletcher: I think I'll go down to Mexico to try to find him. Josey Wales: And then? Fletcher: He's got the first move. I owe him that. I think I'll try to tell him the war is over. What do you say, "Mr. Wilson"? Josey (realizing Fletcher is letting him go): I reckon so. I guess we all died a little in that damn war.
Ten Bears: It's sad that governments are chiefed by the double tongues. There is iron in your words of death for all Comanche to see, and so there is iron in your words of life. No signed paper can hold the iron. It must come from men. The words of Ten Bears carries the same iron of life and death. It is good that warriors such as we meet in the struggle of life... or death. It shall be life.
The simple fact that by movie's end Josey has built himself up a new circle of friends - basically a new family - who care for him.