Rio Lobo (1970)

After the Civil War, Cord McNally searches for the traitor whose perfidy caused the defeat of McNally's unit and the loss of a close friend.

Director:

Howard Hawks

Writers:

Burton Wohl (screenplay), Leigh Brackett (screenplay), 1 more credit »

Stars:

John Wayne, Jorge Rivero, Jennifer O'Neill |  via IMDB
https://archive.org/details/RIOLOBO