| # | Episode | Airdate | Overview
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| 501 | "Bug Out" | September 21 | A two-part episode. With North Korean forces on the march, the 4077th must bug out and move the entire camp, but a soldier who has just had serious spinal surgery cannot be moved. Hawkeye, Radar and Major Houlihan stay behind as the rest of the camp tries to set up a new base.
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| 502 | "Margaret's Engagement" | September 28 | Major Margaret Houlihan reveals when she comes back from Tokyo that she is now engaged to Lieutenant Colonel Donald Penobscot, a West Point graduate who has swept her off his feet. Frank Burns doesn't take the news so well, and almost has a complete nervous breakdown.
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| 503 | "Out of Sight, out of mind" | October 5 | Hawkeye is blinded after a heater he was fixing in the middle of winter explodes, and he fears he may have lost his sight forever. Major Burns makes a tidy sum of money betting on baseball games he's secretly already listened to with enlisted men--for a while.
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| 504 | "Lt. Radar O'Reilly" | October 12 | After Hawkeye wins a favor from someone at headquarters in a poker game, he uses it to get Radar promoted from Corporal to Second Lieutenant. Radar struggles to adjust to his new status as an officer, but eventually is able to resign his commission and return to being the company clerk.
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| 505 | "The Nurses" | October 19 | Tensions between Major Houlihan and her nurses reach a breaking point as her discipline becomes draconian, while her nurses' defiance reaches new heights. Hawkeye helps sneak a nurse's husband into camp for a rendezvous, ending in a confrontation in which Major Houlihan reveals what it's like being the head nurse at the 4077th.
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| 506 | "The Abduction of Margaret Houlihan" | October 26 | Klinger forgets to tell anybody that Major Houlihan is going to a local village to deliver a baby, so everybody thinks she's been kidnapped by the enemy, and Colonel Flagg shows up to investigate.
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| 507 | "Dear Sigmund" | November 9 | While visiting the 4077th, Dr. Sidney Freedman writes a letter to the long deceased Sigmund Freud as a way of gathering his thoughts and reflecting on recent events. A string of practical jokes is played by a mysterious trickster.
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| 508 | "Mulcahy's War" | November 16 | A young Private has shot himself in the foot (much to Major Burns ire), and to understand why anybody would do such a thing, Father Mulcahy decides to volunteer to visit the front lines, where he sees the horrors of war firsthand and has to overcome his own fears to save somebody's life.
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| 509 | "The Korean Surgeon" | November 23 | An escaped North Korean Prisoner of War who is a skilled surgeon passes himself off as South Korean (with the help of Hawkeye and BJ, so he can work at the 4077th. They are glad for any help they can get, but Majors Burns and Houlihan suspect he is not who he says he is.
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| 510 | "Hawkeye Get Your Gun" | November 30 | While returning from a short mission to a Korean field hospital, Colonel Potter and Hawkeye are pinned down by enemy fire. To defend himself, Hawkeye must fire a gun for the first time in his life despite his strong moral objections against killing and dislike of guns.
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| 511 | "The Colonel's Horse" | December 7 | While Colonel Potter is away in Tokyo, several problems befall the 4077th, including Klinger being deeply depressed, Major Houlihan having appendicitis and the Colonel's horse falling ill. The camp tries to fix these problems before the Colonel gets back.
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| 512 | "Exorcism" | December 14 | Radar is ordered to remove a Korean spiritual relic from the camp, and immediately a string of bad luck begins to befall the 4077th. An elderly Korean patient refuses treatment until a ritual is performed to remove evil spirits.
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| 513 | "Hawk's Nightmare" | December 21 | Hawkeye's sanity is wearing thin. He experiences constant nightmares and bouts of sleepwalking, so Dr. Sidney Freedman arrives to help Hawkeye deal with his problems.
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| 514 | "The Most Unforgettable Characters" | January 4 | While taking a correspondence course in fiction writing, Radar takes notes on the strange people and events that happen around him every day.
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| 515 | "38 Across" | January 11 | The entire camp obsesses over the answer to a difficult crossword puzzle clue, and goes to remarkable lengths to find out what it is.
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| 516 | "Ping Pong" | January 18 | A Korean corpsman, also the camp's Ping Pong champion, wants to borrow $40 to buy a wedding ring. An injured Colonel, who commands a combat unit after spending many years as an administrator, is insisting he be returned to duty immediately despite his endangerment of his unit in order to receive a commendation.
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| 517 | "End Run" | January 25 | A former college football star becomes suicidal after losing a leg to injuries and Radar tries to console him. Major Burns decides to organize a boxing match between Klinger and Sgt. Zale to settle a dispute and get an emotional high from watching two men beat each other senseless.
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| 518 | "Hanky Panky" | February 1 | Donald Penobscot is admitted to a Tokyo hospital under suspicious circumstances, while B.J. has a lapse in his normally happily married life for a night with a nurse in the process of a divorce, which he soon regrets.
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| 519 | "Hepatitis" | February 8 | When Father Mulcahy is quarantined with hepatitis, Hawkeye must give inoculations to the entire camp, but has difficulty because of a mysterious back ailment. B.J. must perform an experimental operation out of a medical journal.
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| 520 | "The General's Practitioner" | February 15 | A General wants Hawkeye as his personal physician, and won't take no for an answer. Hawkeye, though, doesn't want to give up actually helping wounded and saving lives in exchange for doting on a pampered General.
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| 521 | "Movie Tonight" | February 22 | During a showing of the movie My Darling Clementine the projector breaks repeatedly, so the camp provides its own entertainment, including Father Mulcahy performing a piano solo and members of the unit singing and doing Father Mulcahy impressions, and singing "they say that in the army..."
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| 522 | "Souvenirs" | March 1 | A helicopter pilot is making a lucrative side business selling war souvenirs, and many Koreans are being hurt scavenging battlefields for his merchandise. Frank aggrivates Major Houlihan by pretending that he does not have a gift that she gave him in happier times.
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| 523 | "Post Op" | March 8 | The camp is critically low on blood, so everybody in the camp must donate, even those who are normally quite afraid of needles.
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| 524 | "Margaret's Marriage" | March 15 | Margaret Houlihan decides that she will wed her fiancee at the 4077th, and the camp plays host to bachelor and bachelorette parties and a wedding interrupted by incoming wounded.
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