Episodes Season 4
| Title | Story Line 1 | Story Line 2 | Staring |
| Welcome to Korea | Trapper has been discharged and Pierce goes to Seoul to say goodbye. | Pierce and Radar introduce BJ (new doctor) to Korea and meatball surgery | Robert Karnes, Arthur Song |
| Change of Command | New commander takes charge of the 4077 | Crew adjust to the new commander. | |
| It Happened One Night | Doctors night shift is chaotic with local shelling and critical patients. | Burns searches Margaret's tent for old love letters from him. | Christopher Allport |
| Late Captain Pierce, The | The Army thinks Pierce is deceased and Pierce cannot contact his dad to tell him otherwise. | An undertaker awaits the body of Pierce - or any body | Masur, Richard |
| Hey, Doc | A sniper causes havoc at the 4077 until a tank is brought in to scare them away. | Doctors take "under the table" cases for favors. | Marth, Frank |
| The Bus | Doctors gets lost and bus breaks down returning from med conference. | Soldier surrenders and Burns takes charge of prisoner. | Oh, Soon-Teck |
| Dear Mildred | For Potters anniversary, Frank and Hot Lips have a woodcarving made of him. | Radar rescues a horse and gives it to Potter as gift. | |
| The Kids | 4077th hosts kids bombed out of their orphanage, including pregnant teen shot | Burns receives purple heart from a previous injury (right!) | Doran, Ann |
| Quo Vadis, Captain Chandler? | An injured Soldier thinks he is Jesus Christ | CIA visits the camp to uncover gold brickers. | Fudge, Alan |
| Dear Peggy | Division Chaplin visits the 4077 to review Father Mulcahy | BJ writes Peg about his experiences and happenings | Beatty, Ned |
| Of Moose and Men | A tough Army colonel wants Pierce brought up on charges. | BJ helps a soldier get over a Dear John letter. | Tim O'Conner |
| Soldier of the Month | A prodigy soldier will be selected for R&R in Tokyo | Burns comes down with Hemorrhagic Fever. | Johnny Haymer |
| The Gun | A Colonel with a collectors Colt 45 is injured - and the gun is stolen | Burns steals the gun and lies to Margaret that it is his. | Stevens, Warren |
| Mail Call Again | Burns gets a letter that his wife is divorcing him. | Potter is going to be a grandfather. | |
| Price of Tomato Juice | Radar wants supply to special order tomato juice for the Colonel | Pierce and BJ must keep Margaret from going to Soule | James Jeter |
| Dear Ma | Radar writes home about foot inspection Pierce conducts in camp. | Potter is shot in the butt and Mildred senses it. | Gleeson, Redmond |
| Der Tag | Potter asks the doctors to be nice to Burns while Margaret is in Tokyo. | Burns gets drunk and ends up missing | Morton, Joe |
| Hawkeye | Pierce injured in a jeep accident, has a concussion and babbles to a Korean family. | Hoshi, Shizuko | |
| Some 38th Parallels | A colonel's advance causes many soldiers injured and killed as a result. | Frank is assigned garbage sales detail | O'Hanlon, George |
| Novocain Mutiny, The | Pierce faces courts martial and being hung from charges by Burns of Mutiny | Wilson, Ned | |
| Smilin' Jack | Chopper pilot has delivered so many wounded that he wants chopper pilot of the year. (839) | Potter orders pilot grounded pending a physical. | Hogan, Robert |
| More I See You, The | Pierce's long lost flame is assigned to the 4077 | BJ contacts Peg through a series of radio connections | Danner, Blythe |
| Deluge | The 4077 receive abundance of wounded, during a rainstorm. | News reports that the world goes merrily on. | |
| The Interview | A stateside television correspondent interviews M*A*S*H personnel | Roberts, Clete |