“Macho Callahan,” released in 1970 and directed by Bernard L. Kowalski, features David Janssen as a man who rebels after being tricked into joining the Confederate Army, leading to imprisonment on desertion charges. Following his release and reunion with his old friend Juan (Pedro Armendáriz Jr.), he seeks out the person responsible for his troubles (Lee J. Cobb). An honorable duel with a Confederate officer (David C…