Military branchA military branch is a first level subdivision of the national armed forces of a state.Types of branchesUnified armed forcesThe Canadian Armed Forces is the unified armed forces of Canada. While it has three distinct commands – namely the Canadian Army, Royal Canadian Navy, and Royal Canadian Air Force – it remains a single military service.NATO definitionBranch of 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.