The Systems Alliance Military is made up of three branches:

Alliance Navy



The Alliance Navy is the oldest and largest branch of the Human Systems Alliance. It conducts naval operations. The Navy operates the deep-space vessels, such as frigates, cruisers, and dreadnaughts. This is the equivalent of the blue-water navies of Earth, namely the most powerful navy on Earth: the United States Navy. The US, being the sole super-power of the world, had the most influence, and so the Alliance military generally adopts its traditons from the US. The Navy and Marine Corps use a modified version of US Navy ranks.

Alliance Navy and Marine Corps Ranks:

Enlisted
Serviceman 3rd Class / Private 2nd Class
Serviceman 2nd Class / Private 1st Class
Serviceman 1st Class / Corporal

Non-Commissioned Officers (still enlisted)
Service Chief
Gunnery Chief
Operations Chief / Seargent Major

Officers
2nd Lieutenant
1st Lieutenant
Staff Lieutenant
Lieutenant Commander
Staff Commander
Captain / Major
Rear Admiral / Lieutenant General
Admiral / General
Fleet Admiral


Alliance Marine Corps



The Alliance Marine Corps was the second service created after the Navy when the need for armies arrived during the First Contact War. Because any army would need to be deployed from starships anyway, it was decided the new service should be called the Marine Corps, as marines, not soldiers, conducted "amphibious" assault landings. The Marine Corps utilizes tanks and armored personnel carriers like armies did back on Earth. The only naval personnel that frequently sees ground combat is the Orbital Deployment, Reconnaissance, Infiltration, and Assault Force-S Division, which is the 23rd century equivalent of the Navy SEALs of Earth. The Navy and Marine Corps use a modified version of US Navy ranks.

Alliance Space Command



The smallest branch of the Alliance Military, the Space Command is the equivalent of air forces back on Earth. Instead of mobile command centers, the ASC (pronounced "ay-ess-see" or "ask") utlizes space stations (however, the one at Arcturus is a naval space station, like a naval port on Earth). The ASC also makes use of long range, Mass Relay and FTL-capable starfighters, unlike the Navy, which only has short range FTL fighters. They also have shuttles, used for short-range transportation (like helicopters; the Navy and Marine Corps also use shuttles) and cargo freighters about the size of merchant ships. The majority of ASC personnel stay on planet-side command posts or space stations. It was established in 2167. The ASC uses a modified version of US Army/Air Force ranks, as a sense of pride and tradition.

Alliance Space Command Ranks:

Enlisted
Airman
Airman 1st Class
Senior Airman

Non-Commissioned Officers
Staff Seargent
Technical Seargent
Master Seargent

Officers
Staff Lieutenant
Flight Lieutenant
Captain
Major
Lieutenant Colonel
Colonel
Lieutenant General
General
Star Marshall

Wouldnt the ASC be a part of the Navy? Possibly a branch of the navy?

Yeah, but I'm anti-navy (friendly Air Force rivalry). So I made a new branch based of the Air Force. If I join ASC with the Navy, technically the Marine Corps would be too, and this entire topic would be completely useless.

Ill think about it