A Corpsman is a medical professional in the United States Navy and Marine CORPS. They are responsible for providing medical care to sailors and Marines, including emergency medical treatment, preventive health measures, and health education. The term 'Corpsman' is derived from the French word 'CORPS, ' meaning body. Corpsmen are highly trained and certified in first aid, CPR, and other medical procedures. They are also responsible for providing medical support during combat operations.