(1) Introduction: Artificial intelligence (AI) is transforming healthcare and has particular relevance in military medicine, where austere environments, uncertainty, and time-critical decisions are common; (2) Methods: A literature review was conducted in PubMed/MEDLINE, Scopus, and Web of Science, covering studies published between 2000 and 2026. Relevant articles on AI in military medicine were identified and grouped into three domains: clinical, operational, and educational; (3) Results: Forty-one studies were included. In the clinical domain, AI supports decision-making, trauma care, medical imaging, and mental health, including early detection of post-traumatic stress disorder (PTSD). Operational applications include physiological monitoring, triage optimization, and medical evacuation. In education, AI enhances medical simulation and adaptive learning. Key limitations include poor data quality and availability, algorithmic bias, and limited validation in real operational settings; (4) Conclusions: AI can substantially improve military medical practice by increasing diagnostic accuracy, supporting rapid decisions, and improving operational efficiency. However, implementation requires rigorous clinical validation, transparent and reliable systems, and careful attention to ethical and organizational issues. AI should be used as a complementary tool that supports, rather than replaces, clinical judgment.