This is a guide to the episode " 'Twas the Day After Christmas ," which is Season 10, Episode 9 (sometimes listed as Episode 10). Originally broadcast on December 28, 1981 , the episode was directed by Burt Metcalfe and written by Elias Davis and David Pollock . Plot Summary

: Alan Alda (Hawkeye), Mike Farrell (B.J. Hunnicutt), Harry Morgan (Col. Potter), Loretta Swit (Margaret Houlihan), David Ogden Stiers (Charles Winchester), Jamie Farr (Klinger), and William Christopher (Father Mulcahy).

Initially skeptical, agrees to the swap, leading to a series of comedic and eye-opening role reversals:

: Val Bisoglio as Sgt. Pernelli and Kellye Nakahara as Nurse Kellye.

: Alan Alda and Gene Reynolds served as creative consultants, and Dr. Walter D. Dishell provided medical advisory. Episode Themes

: It serves as a tribute to the "backbreaking work" of the enlisted ranks, often ignored by the officers.

: Klinger is put in charge of the camp, while Colonel Potter takes over as company clerk. Potter quickly realizes how overwhelming the paperwork and logistics of Klinger’s job truly are.