It was developed as the sequel series as it takes place immediately following the end of the Korean War and chronicles the postwar adventures of three main characters from the original series: Colonel Sherman T. Potter (Harry Morgan), Sergeant Maxwell Klinger (Jamie Farr) and Father John Mulcahy (William Christopher).

M*A*S*H supporting cast-member Kellye Nakahara joined them, albeit off-camera, as the voice of the hospital's public address system.

In the one-hour pilot episode "September of '53"/"Together Again", Colonel Potter returns home from South Korea to his wife Mildred (Barbara Townsend) in Hannibal, Missouri.

Also on hand is the idealistic, talented, and often hungry young resident surgeon Gene Pfeiffer (Jay O. Sanders), attractive secretary Bonnie Hornbeck (Wendy Schaal), who has her eye on Klinger, and old-timer Bob Scannell (Patrick Cranshaw), who served under then-Sergeant Potter in World War I and was now a hospital resident of 35 years (thanks to his exposure to mustard gas).

Halfway through the first season, Dr. Mark Boyer (David Ackroyd) was introduced as a hardened veteran who lost a leg in Korea and had a hard time adjusting to civilian life.

An attractive new psychiatrist, Dr. Lenore Dudziak (Wendy Girard), arrives to begin the daunting task of evaluating Klinger, while Potter is horrified that Wainwright has assigned Alma Cox as his new secretary.

Edward Winter, who played Colonel Samuel Flagg in the original series, reprised his role in a season 2 episode, "Trials".

[2] AfterMASH made frequent references to M*A*S*H, and likewise featured storylines that highlighted the horrors and suffering of war, from the non-combat perspective of a veterans' hospital.

For its second season, CBS moved the show to Tuesday nights at 8:00 p.m., opposite NBC's Top 10 hit The A-Team, and launched a marketing campaign featuring illustrations by Sanford Kossin of Max Klinger in a female nurse's uniform shaving off Mr. T's signature mohawk, theorizing that AfterMASH would take a large portion of the A-Team audience.

[4] The opposite occurred, as AfterMASH's ratings plummeted to near the bottom of the television rankings, leading to its cancellation just nine episodes into its second season, finishing at only No.