| # | Episode | Airdate | Overview
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| 401 | "Welcome to Korea" | September 12 | A two-part episode. Captain Trapper John MacIntyre had received his orders to ship home. Hawkeye wants to go to Seoul to bid his buddy farewell. Once at Kimpo, Radar goes off to find the new doctor, while Hawkeye tries to find his friend before he leaves for home. Hawkeye meets the new doctor, Captain BJ Hunnicutt, still angry that Trapper has left without saying good-bye.
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| 402 | "Change of Command" | September 19 | Colonel Sherman T. Potter arrives at the 4077th and takes command. As a career soldier and former cavalry, he initially does not mix well with the more relaxed atmosphere at the camp, but he soon adapts. Frank Burns loses his position as CO and runs away in anger.
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| 403 | "It Happened One Night" | September 26 | A freezing night features an artillery barrage that comes closer and closer to the camp, a patient going downhill, and Frank's searching Hot Lips' tent for his letters.
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| 404 | "The Late Captain Pierce" | October 3 | A bureaucratic mistake leaves the army thinking that Hawkeye is dead, and he simultaneously enjoys the lack of responsibility that comes from being legally deceased, with trying to contact his father back in Maine to tell him he's still alive.
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| 405 | "Hey, Doc" | October 10 | Quid pro quo at the 4077th: two bottles of Scotch for secret surgery, a tank to scare off snipers for an unauthorized shot of penicillin, and Frank's signature on a fake medical discharge to replace a stolen microscope.
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| 406 | "The Bus" | October 17 | Radar, driving Hawkeye and others back from a medical meeting, gets lost and stalls the bus, but all are saved by a surrendering Korean (Soon-Teck Oh).
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| 407 | "Dear Mildred" | October 24 | While Potter writes home, Frank and Hot Lips have a wood carving made for him and Radar rescues a horse and makes him a present of it.
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| 408 | "The Kids" | October 31 | The doctors of the 4077th play host to kids bombed out of their orphanage, and at the same time have to deliver a baby and care for battle casualties. Frank receives a purple heart for receiving an eggshell fragment in his eye, but the other doctors soon find a better recipient for it.
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| 409 | "Quo Vadis, Captain Chandler" | November 7 | A bombardier has developed a mental illness in that he believes he is Jesus Christ. Dr. Sidney Freedman arrives to treat the patient, but Colonel Flagg wants him sent back to duty immediately.
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| 410 | "Dear Peggy" | November 11 | B.J. writes home to his wife, reporting Klinger's escape attempts, the visit of a formidable chaplain (Ned Beatty), and one of Frank's goof-ups.
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| 411 | "Of Moose and Men" | November 21 | Hawkeye tangles with a tough Army colonel (Tim O'Conner), B.J. helps Sergeant Zale (Johnny Haymer), who's gotten a "Dear John" letter, and Frank looks endlessly for Korean saboteurs.
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| 412 | "Soldier of the Month" | November 28 | Frank has a fever in the midst of an outbreak and makes a will leaving all his money to his wife and all his clothes to Hot Lips. Radar, Klinger, Sgt Zale, and Igor are contenders for contest that awards a vacation to Tokyo.
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| 413 | "The Gun" | December 2 | A Colonel who is receiving treatment at the 4077th has a valuable .45 cavalry antique revolver, which is checked as he is taken into surgery. Major Burns steals the revolver to show off to Major Houlihan, leaving Radar accountable and in very deep trouble. When forced by Hawkeye and B.J. to return the gun to the weapons bin, Frank shoots himself in the foot. In actual fact the only US Officer to carry a such a weapon into modern war {Post 1940} was George S. Patton}.
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| 414 | "Mail Call, Again" | December 9 | Mail brings a letter to Frank saying his wife is divorcing him, a letter to Colonel Potter telling him he's going to be a grandfather, and a home movie for Radar.
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| 415 | "The Price of Tomato Juice" | December 16 | Radar gets the help of Hawkeye and B.J. to procure something Colonel Potter says he's fond of but that's hard to come by--tomato juice.
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| 416 | "Dear Ma" | December 23 | Radar writes home to his mother about Hawkeye conducting the camp foot inspection and Colonel Potter getting some shrapnel in his backside.
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| 417 | "Der Tag" | January 6 | Potter decides Frank would be less of a pain if the others were more friendly to him; they oblige, with some startling results.
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| 418 | "Hawkeye" | January 13 | Hawkeye is injured in a jeep accident and, aware he has a concussion, babbles to a Korean family to keep himself awake.
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| 419 | "Some 38th Parallels" | January 20 | Frank tries to distinguish himself by selling the camp garbage, but it's Hawkeye who finds a use for it: he dumps it on a troublesome colonel (George O'Hanlon, Jr.). Radar helps save a patient's life, and is devastated when the patient dies anyway.
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| 420 | "The Novocaine Mutiny" | January 27 | Frank has Hawkeye up on charges of mutiny for various infractions committed while Potter was away on leave and Frank was acting C.O.
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| 421 | "Smilin' Jack" | February 3 | The 4077th plays host to a diabetic helicopter ambulance pilot (Robert Hogan) who doesn't want to quit and a twice-wounded GI (Dennis Kort) who does.
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| 422 | "The More I See You" | February 10 | Hawkeye is reunited with a woman (Blythe Danner) he thought was out of his life forever, but who never altogether leaves.
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| 423 | "Deluge" | February 17 | A sudden deluge of wounded at the 4077th is followed by a laundry fire and a rainstorm to make matters difficult for the staff.
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| 424 | "The Interview" | February 24 | A stateside television correspondent (Clete Roberts) interviews M*A*S*H personnel about their experiences and thoughts. (in Black & White)
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