What follows is a list of ranks and their assigned duties within the Terrestrial Forces and the Stellar Navy, which are the two branches of the Union's Federal Military. For a full description of the Union's Military, see the thread "The Obsidian Union" located in the Site Fanon section.
Ranks within the Terrestrial Forces:
Armsman: Fights in infantry squads or mans vehicles in mechanized squads
Squad Leader: Leads infantry squads or mans the lead vehicle in a mechanized squad (a squad consists of ten armsmen and a squad leader)
Master-at-Arms: Oversees day-to-day non-combative operations and is charged with maintaining order amongst the lower ranks
Lieutenant Marshal: Commands a platoon (two or more squads)
Marshal: Commands a company (two or more platoons)
Field Commander: Commands a battalion (two or more companies)
Lieutenant Commander: Commands a regiment (two or more battalions)
Commander: Commands a brigade (two or more regiments)
High Commander: Commands a division of the Terrestrial Forces
Supreme Commander of the Terrestrial Forces: Commands the entirety of the Terrestrial Forces
Ranks within the Stellar Navy:
Wingman: Mans a fighter/bomber/etc. or mans the gun turrets on a space station or capital ship
Wing Commander: Leads a squadron of fighters/bombers/etc.
Ensign: Responsible for the general operations of a ship
Chief Ensign: Organizes the ensigns on a larger, non-capital ship or a group of ensigns on a capital ship
Lieutenant Captain: Serves as the second-in-command to a ship’s commanding officer
Captain: Serves as the commanding officer of a non-capital ship
High Captain: Serves as the commanding officer of a capital ship
Admiral: Commands a fleet or a group of ships in a large fleet
High Admiral: Commands a large fleet
Grand Admiral of the Stellar Navy: Commands the entirety of the Stellar Nav