When the pilot was picked up, however, they were added to the cast. George Morgan as Father Mulcahy in “M*A*S*H–The Pilot”. When CBS picked up M*A*S*H, and the producers were faced with the prospect of a weekly series, they decided to replace George Morgan. I assume, but don’t know for sure, that George Morgan auditioned for the role of Father Mulcahy when the pilot episode was under production, and he obviously got it.