On March 15, 1942 the United States Army added expanded psychiatric sections to the revision of U.S. Army mobilization regulations, including a new paragraph, written by psychiatrist, and National Research Council committee member, Lawerence Kubie. It was entitled “Sexual Perversion,” and established the Army’s anti-homosexual screening procedures for the rest of the war. 

The 1942 regulation for the first time defined both the homosexual and the “normal” person, listed telltale signs of homosexuality, and clarified procedures for rejecting gay draftees. The regulation further defined sexual deviance by describing the sexually “normal” man as one who had a “conventional attitude toward sexual problems.” It listed three possible signs for identifhying male homosexuals. . .: “feminine bodily characteristics,” “effeminacy in dress and manner,” and a “patulous [expanded] rectum.” All three of these markers linked homosexuality with effeminacy or sexually “passive” anal intercourse and ignored gay men who were masculine or “active” in anal intercourse. – Allan Bérubé, in Coming Out Under Fire:

Implicitly, the normal man was defined as stereotypically “masculine” in bodily characteristics, dressed and acted in a masculine manner, sported a tight ass hole, and in his sexual relations with women rejected any act that could possibly be perceived as passive.

Fearing that masses of young men would now claim to be homosexual to escape the draft, hard-line military officials argued for the necessity of maintaining a widespread revulsion toward homosexuality both inside and outside the military to determine potential malingers. The 1942 Army standards addressed this problem by requiring examiners to send the self-declared gay selectee back to his local draft board for a “social investigation” into his backgroound to determine whether he was truly homosexual or just a [heterosexual] draft dodger.