The American military’s public international strategy of Communist containment, systematic weapons build-ups, and military occupations across the globe depended heavily on its internal and often less visible strategy of controlling the lives and intimate relationships of its members. From 1950 to 2000, the military justice system, under the newly instituted Uniform Code of Military Justice, waged a legal assault against all forms of sexual deviance that supposedly threatened the moral fiber of the military community and the nation. Prosecution rates for crimes of sexual deviance more than quintupled in the last quarter of the twentieth century. Drawing on hundreds of court-martial transcripts published by the Judge Advocate General of the Armed Forces, Policing Sex and Marriage in the American Military explores the untold story of how the American military justice system policed the marital and sexual relationships of the service community in an effort to normalize heterosexual, monogamous marriage as the linchpin of the military’s social order. Almost wholly overlooked by military, social, and legal historians, these court transcripts and the stories they tell illustrate how the courts’ construction and criminalization of sexual deviance during the second half of the twentieth century was part of the military’s ongoing articulation of gender ideology. Policing Sex and Marriage in the American Military provides an unparalleled window into the historic criminalization of what were considered sexually deviant and violent acts committed by U.S. military personnel around the world from 1950 to 2000.