Who played Father Mulcahy in the pilot episode of M*A*S*H?

George Morgan played Father Mulcahy in the pilot episode of M*A*S*H.

The pilot, first broadcast on September 17, 1972, introduced the 4077th Mobile Army Surgical Hospital and its original ensemble. Morgan appeared as First Lieutenant Father John Patrick Francis Mulcahy, the camp’s Catholic chaplain. After the pilot, the role was recast with William Christopher, who became the actor most viewers associate with Mulcahy and played him for the rest of the series.

The recasting explains why several names can appear in references to the character. René Auberjonois played Mulcahy in the 1970 film, Christopher played him in the television series proper, and Morgan played him only in the television pilot. The character itself remained central to the show’s moral and emotional world, serving as a chaplain among surgeons, nurses, and enlisted personnel. Mulcahy eventually became a regular cast member and appeared through the 1983 finale, making the pilot’s brief casting history an easy detail to overlook.