Subject Material
In 1974 Gelbart and Reynolds had gone to Korea, visited the MASH unit that inspired Hornberger's book, and interviewed about 150 doctors who had served in frontline hospitals (Darrach, 102). They claimed to have interviewed there and later at home nearly every doctor who was in Korea. Reynolds estimated that these stories formed the basis of some 60 percent of the episodes dealing with military or medical incidents (Corliss, 65). Eventually this source of inspiration had to dry up.
Thus, the combat-hospital situation per se had been exhausted as a source of humor. Gelbart said he left the show at the point when he could no longer come up with new story lines. Considering how long the show had been running, and how few chances there were to expand the characters' experiences (given their restricted lives on the military base), the easiest way to expand the material was to deepen the characters.
And so M*A*S*H became increasingly a comedy of character. Linked to this shift of emphasis from situation to character comedy was the emphasis on probing psyches. Conveniently, the two actors (Larry Linville and McLean Stevenson) who played types least capable of changing left the show. These two-dimensional doctors were replaced by characters who were not as silly but were more complex. Most of the remaining principal characters were allowed to evolve. For instance, Corporal Klinger eventually gives up trying to get out of the army on a "Section Eight" by wearing women's clothes.
The greatest change is on the part of the head nurse, Margaret "Hot Lips" Houlihan. Her gradual transition from sex object-martinet to sympathetic woman can be traced through a series of critical episodes. Her first treatment as a human being occurs in season two ("Hot Lips and Empty Arms"), which was written by Linda Bloodworth and Mary Kay Place. Her loneliness and vulnerability are explored in "The Nurses" (season five—also written by Bloodworth). Seasons five and six see Major Houlihan through big changes. She gives up Frank and gets engaged, married, and divorced by season seven and is allowed to grow from her pain. "Hot Lips" is by now called "Margaret" and is treated with respect.
The most striking episode in this regard is "Comrades in Arms" (written by Alda, season six), where Houlihan and Hawkeye, trapped and terrified
by gunfire, make love. Although they do not continue the affair after that night, they are no longer antagonists. Indeed, toward the end of the series' run, the only way to introduce antagonists into the script was to import personnel (like the paranoid Colonel Flagg) from off base.