M*A*S*H* Season 4
"M*A*S*H* - Season Four"
DVD cover for M*A*S*H Season 4.
Season: Season 4
Country/Language United States
Original Run:
First episode: September 12, 1975
Final episode: March 18, 1976
Number of episodes 24
Created by: Larry Gelbart
Executive producer(s): Larry Gelbart & Gene Reynolds
Season guides
Season 3
Season 5

The first two episodes of Season 4 of M*A*S*H, "Welcome to Korea",, parts 1 and 2 aired on CBS-TV on September 12, 1975; it introduced audiences to B.J. Hunnicutt (Mike Farrell). Harry Morgan, who won an Emmy Award at the beginning of the previous season for his guest role as daffy Major General Bartford Hamilton Steele, introduced the role of Colonel Sherman T. Potter, the 4077th's new Commanding Officer, to TV viewers the very next week in the episode "Change of Command". The final episode, "The Interview", aired February 4, 1976. Both Colonel Sam Flagg and Major Sidney Freedman appear once, in the episode "Quo Vadis, Captain Chandler".

Major eventsEdit

  • Trapper leaves the 4077th. Wayne Rogers left the show at the end of Season 3.
  • B.J. Hunnicutt arrives.
  • Colonel Sherman T. Potter arrives and becomes the commanding officer of the 4077h.
  • Clete Roberts arrives to interview the 4077th personnel in "The Interview", the only episode in the entire series to be filmed entirely in black and white, and thought by many fans to be the best episode ever.

Season 4 (1975-1976): List of EpisodesEdit

  • This table is sortable and can present the episodes either in the order they were broadcast (click on the sort buttons in column "Ep.#") or in the order they were produced (click on the sort buttons in the column "Production No.").
  • The episodes were not all broadcast in the same order as they were produced. The broadcast order is also the order of episodes in the DVD set. However, syndicated reruns and paid streaming services such as Netflix sometimes follow the production order (e.g. G-501, G-502, G-503....)
  • Season 4 is where the production order departs significantly from the storyline in the first few episodes. Attempting to watch the season in production order presents serious continuity issues. For example in G-501 "Change of Command", Potter arrives to take command of the 4077th with B. J. Hunnicutt already in the unit. B. J. also features in G-502 "It Happened One Night" and G-503 "Of Moose and Men". Yet in G-504, the first half-hour episode of the two parter "Welcome to Korea", B. J. is shown arriving in Korea to be received by Hawkeye and Radar and Frank Burns is still in temporary command. In the second part of the two parter, G-506, Potter arrives to take command! And G-505 intervenes between the two parts of "Welcome to Korea" (G-504 and G-506)!
  • There is nothing sacred about the production order. It does not reflect the order that the screenwriters and producers intended the episodes to be watched. As Suzy Kalter points out in her book "The Complete Book of M*A*S*H", the production order was the result of logistical constraints. Entire shows and parts of episodes had to be filmed out of sequence based on the availability of the Fox Ranch which was not available all the time because the studio had given the property to the State of California as a State Park.[1] The broadcast order more closely follows the intended storyline.
Ep.# Date aired Episode title Production No. Summary
1 September 12, 1975 Welcome to Korea G-504 and G506 Hawkeye returns from R&R to find out Trapper has been discharged. He rushes to the airport to say goodbye but misses him. But it gives him an opportunity to welcome Trapper's replacement, B.J., to Korea.
2 September 19, 1975 Change of Command G-501 Colonel Sherman T. Potter assumes command of the 4077th.
3 September 26, 1975 It Happened One Night G-502 It's a bitterly cold night, and Hawkeye and B.J. are stuck with the overnight shift and a roomful of unruly patients. In the meantime, Margaret tells Frank that she keeps all his love letters--so he ransacks her tent to get them back.
4 October 3, 1975 The Late Captain Pierce G-507 Hawkeye finds out that due to clerical error, he has been declared dead.
5 October 10, 1975 Hey, Doc G-510 Hawkeye and B.J. agree to help a colleague trying to start a Korean restaurant when he gets home. But Frank refuses to cooperate--until he is involved in an ridiculous tank accident.
6 October 17, 1975 The Bus G-512 After their bus breaks down in the middle of nowhere on the way back from a medical convention, Hawkeye, B.J., Colonel Potter, Frank and Radar find themselves stranded.
7 October 24, 1975 Dear Mildred G-505 Colonel Potter writes his anniversary letter to his wife. Meanwhile, Frank and Margaret try to find the perfect anniversary gift, only to be outdone by Radar.
8 October 31, 1975 The Kids G-511 The 4077th takes in Nurse Cratty's Korean orphans during a shelling attack, including a pregnant girl with a bullet wound. But Frank accuses one of the orphans of stealing his newly (and dubiously) awarded Purple Heart.
9 November 7, 1975 Quo Vadis, Captain Chandler G-513 The latest group of casualties includes a bomber pilot who claims he's Jesus Christ. Frank and Margaret think he's faking battle fatigue in order to get a discharge, and they bring in Colonel Flagg to help expose him.
10 November 14, 1975 Dear Peggy G-509 B.J. writes a letter home to his wife, and Father Mulcahy gets a visit from one of his rigid superiors.
11 November 21, 1975 Of Moose and Men G-503 Hawkeye saves the life of a colonel who wants him reprimanded for disrespect. B.J. tries to save the marriage of a friend who found out his wife is cheating on him, and Frank is paranoid that all Koreans are hiding or burying bombs.
12 November 28, 1975 Soldier Of The Month G-514 The 4077th introduces a "soldier of the month" award, which includes a week of R&R in Tokyo, and Klinger and Radar go all out to win the honor. Frank is supposed to choose the winner, but he contracts a rare fever.
13 December 2, 1975 The Gun G-517 A vintage revolver is stolen from the camp's gun locker and Radar is accused as the thief.
14 December 8, 1975 Mail Call...Again G-518 Colonel Potter finds out that he's about to become a grandfather, and Major Burns learns that his wife knows about his affair with Margaret--and wants a divorce.
15 December 16, 1975 The Price of Tomato Juice G-519 What seems to be a simple request to request to get tomato juice for Colonel Potter becomes a ridiculous, complicated ordeal when Major Burns asks for something in return.
16 December 23, 1975 Dear Ma G-515 Radar's letter home recounts the latest round of foot inspections, and how Colonel Potter's wife's premonition of bad luck comes to fruition.
17 January 6, 1976 Der Tag G-522 Hawkeye and B.J. place a toe tag on a passed-out Frank as part of a drunken practical joke. But the joke backfires on them when he is accidentally shipped out to the front lines.
18 January 13, 1976 Hawkeye G-520 Hawkeye Pierce, going solo, has an accident with a Jeep, and is rescued by a South Korean family. To prevent himself from succumbing to a concussion, Hawkeye begins talking endlessly to the family, who can't understand a word he's saying.
19 January 20, 1976 Some 38th Parallels G-521 Hawkeye has impotency problems, Frank auctions off the 4077th's garbage, and Radar becomes distraught after a patient he has taken special interest in dies.
20 January 27, 1976 The Novocaine Mutiny G-523 Hawkeye is put on trial for attempted mutiny under Frank Burns' command.
21 February 3, 1976 Smilin’ Jack G-508 A chopper pilot with diabetes dead set on bringing in the most wounded from the front to be the 'Chopper Pilot of the Year', continues flying against the docs' orders.
22 February 10, 1976 The More I See You G-524 A nurse that Hawkeye used to live with and never got over arrives at the 4077th. And Hawkeye's heartbreak is only intensified when he learns that she is now married.
23 February 17, 1976 Deluge G-516 The Chinese Army joins the war, killing any hopes the 4077th has about a speedy resolution and homecoming.
24 February 24, 1976 The Interview G-525 War Correspondent Clete Roberts interviews the members of the 4077.


  1. Suzy Kalter, Complete Book of Mash (New York: H.N. Abrams Publishing, 1988), 29.

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