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Military branch (also service branch or armed service) is according to common standard a subdivision of the national armed forces of a sovereign nation or state.

War
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Types of branches

Type	Role	Example (if atypical)
Air and space force	Air and space warfare	French Air and Space Force
Airborne forces	Paratrooper operations	Russian Airborne Forces
Air defence force	Air and missile defense	Egyptian Air Defense Forces
Air force	Aerial warfare
Army	Ground warfare
Border guard	Border security	Vietnam Border Guard
Coast guard	Maritime security	United States Coast Guard
Cyber force	Cyberwarfare	Digital and Intelligence Service (Singapore)
Emergencies service	Disaster relief and emergency management	Military Emergencies Unit (Spain)
Engineering service	Military engineering	Construction and Engineering Forces (Mongolia)
Gendarmerie	Military and/or public policing	National Gendarmerie (France)
General Staff	Command and coordination of the military branches and guiding of the military operations	Strategic Command Operations (Venezuela)
Logistics service	Military logistics	Joint Support Service (Germany)
Marines	Naval land force	United States Marine Corps
Medical service	Medical service	Belgian Medical Component
Military police	Military law enforcement agency	Republic of China Military Police
Military reserve force	National reserve and auxiliary service	Lithuanian National Defence Volunteer Forces
Navy	Naval warfare
Robotic/Smart Force	Unmanned/Robotic warfare	Unmanned Systems Forces (Ukraine)
Strategic rocket force	Operation of strategic missiles	People's Liberation Army Rocket Force (China)
Space force	Space warfare	United States Space Force
Special forces	Special operations	Polish Special Forces

Unified armed forces

The Canadian Armed Forces is the unified armed forces of Canada. While it has three environmental commands - namely the Canadian Army, Royal Canadian Navy, and Royal Canadian Air Force - it remains a single military service.^{[citation needed]}

NATO definition

Branch of service (also branch of military service or branch of armed service) refers, according to NATO standards, to a branch, employment of combined forces or parts of a service, below the level of service, military service, or armed service.^[1]