Adultery remains a criminal offense under the UCMJ because the military views marital infidelity as fundamentally incompatible with the core values of honor, integrity, and trustworthiness essential to military service. The military’s unique requirements for unit cohesion, trust between service members, and maintaining good order and discipline necessitate higher standards of personal conduct than civilian society typically enforces. When service members violate their marital vows, it raises questions about their ability to honor other oaths and commitments, including their oath of service. The military justice system recognizes that personal misconduct, even in seemingly private matters, can have far-reaching effects on military readiness and effectiveness.
The criminalization of adultery reflects the military’s institutional need to maintain command authority and respect within hierarchical structures. Adultery often involves relationships between service members of different ranks, creating conflicts of interest, favoritism concerns, and undermining the chain of command. When senior personnel engage in adultery with subordinates’ spouses, it destroys unit morale and cohesion more effectively than almost any other misconduct. The close-quarters living and working conditions in military environments mean that adultery rarely remains private, instead becoming unit knowledge that breeds resentment, distrust, and conflict among team members who must rely on each other in life-or-death situations.
Historical military tradition has long recognized adultery as incompatible with military service, dating back centuries across various armed forces worldwide. This tradition stems from practical experience showing how extramarital affairs create vulnerabilities to blackmail, compromise operational security, and generate conflicts that degrade combat readiness. Foreign intelligence services have historically exploited adulterous relationships to recruit assets or gather intelligence, making adultery a legitimate security concern. The military’s comprehensive authority over service members’ conduct, both on and off duty, extends to private behavior when it impacts military effectiveness.
The modern justification for criminalizing adultery increasingly focuses on its discriminatory enforcement and actual impact on military operations rather than purely moral considerations. Courts now require prosecutors to prove that specific acts of adultery were prejudicial to good order and discipline or service discrediting, moving away from automatic criminalization of all extramarital sexual conduct. This evolution reflects changing societal attitudes while maintaining the military’s legitimate interest in preventing conduct that genuinely undermines military effectiveness. The continued criminalization serves as both a deterrent and a tool for commanders to address situations where adultery creates actual operational problems rather than merely violating traditional moral codes.…