The term<unk>  has a number of potential connotations. It may mean:
A medical specialty, specifically a branch of occupational<unk>  attending to the medical risks and needs (both preventive and interventional) of soldiers, sailors and other service members. This disparate arena has historically involved the prevention and treatment of infectious diseases (especially tropical diseases), and, in the 20th Century, the ergonomics and health effects of operating<unk> -specific machines and equipment such as submarines, tanks, helicopters and airplanes. Undersea and aviation<unk>  can be understood as subspecialties of<unk> , or in any case originated as such. (The American Board of Medical Specialties does not, however, certify or recognize a specialty or subspecialty of<unk> ”.)
The planning and practice of the surgical management of mass battlefield casualties and the logistical and administrative considerations of establishing and operating combat support hospitals. This involves<unk>  medical hierarchies, especially the organization of structured medical command and administrative systems that interact with and support deployed combat units. (See Battlefield<unk> .)
The administration and practice of health care for<unk>  service members and their dependents in non-deployed (peacetime) settings. This may (as in the United States) consist of a medical system paralleling all the medical specialties and sub-specialties that exist in the civilian sector. See also Veterans Health Administration for medical services given to US veterans.
Medical research and development specifically bearing upon problems of<unk>  medical interest. Historically, this encompasses all of the medical advances emerging from medical research efforts directed at addressing the problems encountered by deployed<unk>  forces (e.g., vaccines or drugs for soldiers, medical evacuation systems, drinking water chlorination, etc) many of which ultimately prove important beyond the purely<unk>  considerations that inspired them.
Military medicine
Mobile health
Sports medicine
Forensic science
Public health
Health science
Food chemistry
Healthcare in Cuba