Harry Morgan, before he was Mash's Colonal Potter he was General Steele.
Colonel Sherman T. Potter - Goodbye, Farewell & Amen - Tribute
Alan Alda on working with Harry Morgan on M*A*S*H , and Morgan's sense of humor
Harry Morgan discusses Col. Sherman Potter on M.A.S.H - EMMYTVLEGENDS
Harry Morgan was an American actor and director whose television and film career spanned six decades. Morgan's major roles included Pete Porter in both December Bride and Pete and Gladys; Officer Bill Gannon on Dragnet; Amos Coogan on Hec Ramsey; and his starring role as Colonel Sherman T. Potter in M*A*S*H and AfterMASH.