Vulcan Defense Force
- Military of the Confederacy of Vulcan
- Originally reported directly to the Vulcan High Command
- Following 2154 reforms, reported to the Vulcan Defense Directorate
- Upon transition of Defense Force from independent agency to Defense Directorate subagency, all vessels previously referred to with DFC prefix were renamed to DDV prefix
- Conjectural based on conflicting references to "Defense Directorate Vessel" (ENT Novel: Beneath the Raptor's Wing) and DFC (ENT Novel: To Brave the Storm)
- Upon transition of Defense Force from independent agency to Defense Directorate subagency, all vessels previously referred to with DFC prefix were renamed to DDV prefix
- Following 2154 reforms, reported to the Vulcan Defense Directorate
- Officers
- Ranking, highest to lowest:
- Enriov (equivalent to Starfleet admiral) (ENT Novel: Kobayashi Maru)
- Commander
- Also referred to as "Captain" when in command of a spacegoing vessel
- Subcommander (equivalent to Starfleet commander)
- Major (equivalent to Starfleet lieutenant commander)
- Lieutenant
- Sublieutenant (equivalent to Starfleet lieutenant junior grade)
- Ranking, highest to lowest:
- Enlisted
- Enlisted rank structure, highest to lowest:
- Altern
- Subaltern
- Enlisted rank structure, highest to lowest: