Earth Starfleet
- Standing space-based military arm of United Earth circa 2130-2161
- Contrast UESPA (civilian space exploration) and Earth Cargo Service (United Earth merchant marine)
- Established 2130 with founding of United Earth as conglomeration of space-based military services of component nations
- Chartered for both exploration of space and defense of United Earth from external threats
- Founded in large part as part of Earth's attempts at asserting independence from Confederacy of Vulcan despite protectorate status
- Source of much of bureaucratic structure of later Federation Starfleet
- Disbanded and reincorporated into Starfleet upon founding of Federation in 2161 alongside UESPA
- Officers
- Training provided at Earth Starfleet Flight School
- Officer rank structure, highest to lowest
- Admiral
- Vice admiral
- Rear admiral
- Commodore
- Captain
- Commander
- Lieutenant
- Ensign
- Enlisted
- Enlisted rank structure, highest to lowest
- Crewman 1st class
- Crewman 2nd class
- Crewman 3rd class
- Enlisted rank structure, highest to lowest
- Divisions
- Divisions indicated by color, stripe along shoulders/collarbone
- Command - Copper brown
- Command
- Helm and navigation
- Operations - Maroon
- Engineering
- History
- Operations
- Security
- Tactical
- Sciences - Dark teal
- Communications
- Medical
- Science
- Headquartered at Starfleet Command, San Francisco, Earth