Captain Stevens was a character who made a single appearance in the "Bug Out". The part of Captain Stevens was played by Don Eitner.
About Captain Stevens[]
In the episode, The 4077th MASH has "bugged out" but Hawkeye, Margaret and Radar have stayed behind to look after a patient who can't be moved. Stevens leads a reconnaissance patrol of 3 jeeps into the almost deserted MASH camp site. Hawkeye asks where the frontline is. "You're standing on it," Stevens replies.
The character is not named in the episode credits. Don Eitner is billed simply as "Captain", but he introduces himself to Hawkeye as "Captain Stevens, intelligence and reconn".
On Steven's left lapel appears to be the anachronistic branch of service insignia of the intelligence corps, the same as Colonel Sam Flagg is sometimes seen wearing. See for example Sam Flagg's picture in the gallery of Officer of the Day".