Gryphos
Auror
So I've been toiling with the idea of an aerial navy using airships for my world and I've pretty much got the ranks and roles down.
One thing to consider is crew sizes. In seaships a rather large crew was needed because you needed that many to physically sail the ship and operate the cannons. But for airships you don't really need that many, since all the ship's movements are controlled by a single piloting captain. Thus, the only crew a military ship would need would be people to operate the guns and act as mechanics. Thus, effectively, depending on the size of the ship, I've made it so an average crew size for a ship is around ten, consisting of these roles.
Captain
Badge symbol: A goose
Info: Controls the ship and commands the crew.
Prefix: Called 'captain' by the crew, regardless of overall rank in the Aerial Navy.
Deck Commander
Badge symbol: A duck
Info: The captain’s second in command. Commands the crew on a base level when the captain is occupied flying there ship, and takes over command should the captain die in the midst of battle.
Prefix: Called 'commander' by the crew, regardless of overall rank in the Aerial Navy.
Gunnerman (officially, "Aerial Sentry Officer")
Badge symbol: An owl
Info: Mans a gun and storms the enemy ship during a boarding operation. Trained extensively in marksmanship.
Mechanic (officially, "Aerial Systems Maintenance Officer")
Badge symbol: A swallow
Info: Maintains the ship, repairing and replacing components. Repairing engines often requires them to attach themselves to a tether and hang from the side of the ship. Mechanics are known for their acrobatic skill at navigating the ship, leading to their nickname, ‘line monkeys’, referring to how they tether themselves to the ship.
Those are the three specific fields of the Aerial Navy: command (captain and deck commander), gunnery, and maintenance. Only the command field has an overall hierarchy of ranks in the navy, since the other two are singular in purpose and therefore have no prospects for promotion.
Then there is the hierarchy of command ranks. All badge symbols for the command ranks above Aerial Captain are a swan, which is worn alongside the goose or duck badge of ship command depending on the person's current position on a specific ship. Though the badge for every command rank is a swan, it is decorated differently depending on the rank and nation of origin.
Supreme Admiral of the Sky
Info: Commands the entirety of the aerial navy, including the wing corps, in charge of overall strategy of a war rather than the specifics of a battle.
Prefix: Supreme Admiral
High Admiral
Info: Commands a fleet of airships. Name is reference to the way the admiral’s ship will often be positioned above the rest of the fleet, so as to give the admiral an unobstructed view of the entire battle.
Prefix: Admiral
Vice Air Admiral
Info: Just below High Admiral in rank. In a battle they traditionally command the front portion of a fleet, where the fighting is thickest, and act as a deputy to the high admiral.
Prefix: Vice Admiral
Rear Air Admiral
Info: The lowest of the admiral ranks. In a battle they traditionally command the rear portion of a fleet, is therefore often the one in charge of carrying out flanking manoeuvres.
Prefix: Rear Admiral
Aerial Commodore
Info: Commands a small amount of ships, not enough to be a full fleet. Can also be in charge of a single unusually large or important vessel.
Prefix: Commodore
Aerial Captain
Info: Commands a single vessel of normal variety and importance.
Prefix: Captain
Deck Commander
Info: Commands the crew of a normal ship on a base level when the captain is occupied flying the ship, and takes over command should the captain die in the midst of battle.
Prefix: Commander
The name 'high admiral' came from the idea that airship battles would be unique from seaship battles in that they take place on a 3-dimensional plane, meaning ideally the best place to view the battles from would be the top of the formation. That is also why there is no need to distinguish it from its Marine Navy counterpart by calling it 'High Air Admiral', since you can't exactly get a 'High Sea Admiral'.
Also, having a specific rank that corresponds with a specific ship role (like Aerial Captain and Deck Commander) does not mean they can only serve that role. For example, an Aerial Captain could serve as deck commander on a higher ranking Aerial Commodore's ship, and a commodore could serve as deck commander on a high admiral's ship etc.
Then there's the Wing Corps, the section of the Aerial Navy that operates using aeroplanes. Since aeroplanes are a recent technology in my world, the ranking system is a bit more simple. Also, thought it is separate from the standard fleet, it is still part of the navy and therefore answers to the Supreme Admiral of the Sky.
Chief Marshal of the Wing Corps
Info: Commands the entirety of the Wing Corps.
Prefix: Chief Marshal
Wing Marshal
Info: Commands several squadrons of fighters.
Prefix: Marshal
Squadron Leader
Info: Commands a squadron of aeroplanes and their pilots, usually six including the squadron leader himself.
Prefix: Squadron Leader
Wing Pilot
Info: Pilots a fighter plane.
The badge symbols for the Chief Marshal and Wing Marshal ranks are both an eagle, while Squadron Leader and Wing Pilot both have a falcon as their symbol.
One thing to consider is crew sizes. In seaships a rather large crew was needed because you needed that many to physically sail the ship and operate the cannons. But for airships you don't really need that many, since all the ship's movements are controlled by a single piloting captain. Thus, the only crew a military ship would need would be people to operate the guns and act as mechanics. Thus, effectively, depending on the size of the ship, I've made it so an average crew size for a ship is around ten, consisting of these roles.
Captain
Badge symbol: A goose
Info: Controls the ship and commands the crew.
Prefix: Called 'captain' by the crew, regardless of overall rank in the Aerial Navy.
Deck Commander
Badge symbol: A duck
Info: The captain’s second in command. Commands the crew on a base level when the captain is occupied flying there ship, and takes over command should the captain die in the midst of battle.
Prefix: Called 'commander' by the crew, regardless of overall rank in the Aerial Navy.
Gunnerman (officially, "Aerial Sentry Officer")
Badge symbol: An owl
Info: Mans a gun and storms the enemy ship during a boarding operation. Trained extensively in marksmanship.
Mechanic (officially, "Aerial Systems Maintenance Officer")
Badge symbol: A swallow
Info: Maintains the ship, repairing and replacing components. Repairing engines often requires them to attach themselves to a tether and hang from the side of the ship. Mechanics are known for their acrobatic skill at navigating the ship, leading to their nickname, ‘line monkeys’, referring to how they tether themselves to the ship.
Those are the three specific fields of the Aerial Navy: command (captain and deck commander), gunnery, and maintenance. Only the command field has an overall hierarchy of ranks in the navy, since the other two are singular in purpose and therefore have no prospects for promotion.
Then there is the hierarchy of command ranks. All badge symbols for the command ranks above Aerial Captain are a swan, which is worn alongside the goose or duck badge of ship command depending on the person's current position on a specific ship. Though the badge for every command rank is a swan, it is decorated differently depending on the rank and nation of origin.
Supreme Admiral of the Sky
Info: Commands the entirety of the aerial navy, including the wing corps, in charge of overall strategy of a war rather than the specifics of a battle.
Prefix: Supreme Admiral
High Admiral
Info: Commands a fleet of airships. Name is reference to the way the admiral’s ship will often be positioned above the rest of the fleet, so as to give the admiral an unobstructed view of the entire battle.
Prefix: Admiral
Vice Air Admiral
Info: Just below High Admiral in rank. In a battle they traditionally command the front portion of a fleet, where the fighting is thickest, and act as a deputy to the high admiral.
Prefix: Vice Admiral
Rear Air Admiral
Info: The lowest of the admiral ranks. In a battle they traditionally command the rear portion of a fleet, is therefore often the one in charge of carrying out flanking manoeuvres.
Prefix: Rear Admiral
Aerial Commodore
Info: Commands a small amount of ships, not enough to be a full fleet. Can also be in charge of a single unusually large or important vessel.
Prefix: Commodore
Aerial Captain
Info: Commands a single vessel of normal variety and importance.
Prefix: Captain
Deck Commander
Info: Commands the crew of a normal ship on a base level when the captain is occupied flying the ship, and takes over command should the captain die in the midst of battle.
Prefix: Commander
The name 'high admiral' came from the idea that airship battles would be unique from seaship battles in that they take place on a 3-dimensional plane, meaning ideally the best place to view the battles from would be the top of the formation. That is also why there is no need to distinguish it from its Marine Navy counterpart by calling it 'High Air Admiral', since you can't exactly get a 'High Sea Admiral'.
Also, having a specific rank that corresponds with a specific ship role (like Aerial Captain and Deck Commander) does not mean they can only serve that role. For example, an Aerial Captain could serve as deck commander on a higher ranking Aerial Commodore's ship, and a commodore could serve as deck commander on a high admiral's ship etc.
Then there's the Wing Corps, the section of the Aerial Navy that operates using aeroplanes. Since aeroplanes are a recent technology in my world, the ranking system is a bit more simple. Also, thought it is separate from the standard fleet, it is still part of the navy and therefore answers to the Supreme Admiral of the Sky.
Chief Marshal of the Wing Corps
Info: Commands the entirety of the Wing Corps.
Prefix: Chief Marshal
Wing Marshal
Info: Commands several squadrons of fighters.
Prefix: Marshal
Squadron Leader
Info: Commands a squadron of aeroplanes and their pilots, usually six including the squadron leader himself.
Prefix: Squadron Leader
Wing Pilot
Info: Pilots a fighter plane.
The badge symbols for the Chief Marshal and Wing Marshal ranks are both an eagle, while Squadron Leader and Wing Pilot both have a falcon as their symbol.