Charles R. Frank (born April 17, 1947) made two appearances on M*A*S*H, first as Captain Hathaway in the Season 5 episode "Dear Sigmund" and then as Lieutenant Martinson in the Season 6 episode "What's Up Doc?" Charles is noted for playing Bret Maverick's cousin Ben Maverick in the 1978 TV-movie The New Maverick with Wikipedia:James Garner and Jack Kelly, and in the short-lived 1979 television series Young Maverick. He graduated with the class of 1969 from Middlebury College in Vermont.