When did Max Klinger join MASH?

Answer 1

The character of Max Klinger, played by Jamie Farr, was introduced in the 4th episode, "Chief Surgeon Who?" as a reluctant draftee, trying to get a "Section 8" (psychiatric discharge) by wearing women's clothing. Cross-dressing, however, wasn't Klinger's only ploy, as he surprised and delighted audiences by showing up on guard duty stark naked in front of a visiting General (Sorrell Booke). As I understand it, Klinger was supposed to have been a one time guest spot, but the response from appreciative audiences prompted the powers that be to write the Klinger character into the show again. Mr. Farr reprised his role as Klinger, creating the beloved character has entertained audiences for all these years.