Chain of Command

A command hierarchy is a group of people dedicated to carrying out orders "from the top", that is, of authority. It is part of a power structure: usually seen as the most vulnerable and also the most powerful part of it.

Command Hirachy Union Militarty

The Ultimate Command Power lies in the hands and extremities of all Union Citzens. It is them alone who can declare war, accept peace, surrender and or give the general orders and task to all military.

The will of the people is made known through their representatives at the Assembly.

The Armed Forces Council recommends the general course of action during peace times.

The Admiral of the Fleet recieves his Orders from the Assembly.

Fleet Operations and Fleet Command formailize general orders and transmit them to Theater Chiefs

In the case of a Declared War, the Commander in Chief becomes the highest Command Authority over all Armed Forces of the UNion (Including all local forces)

After the Green Hell Crisis this Office was  given to Admital Stahl who stayed CIC till his retirement.

Aboard Ships

Aboard Union Ships the Captain is the highest command authority.

Second is the XO or Executive Officer

Third is the COO (Chief of OPS)

Fourth: OPS Officers

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The Chain oif Command  after that is usually: (1) Captains Office - Officers / Departments that in General report directly to the Captain.
 * Helm - Senoir (1)
 * Security - Senior(2)
 * Navigations - Senior(1)
 * Tactical - Senior(1)
 * Communications - Senior(1)
 * Engineering - Senior(2)
 * Science - Senior(3)
 * Medical - Senior(3)
 * By Rank

(2) XO Office - Officers / Departnent usually reporting to the XO

(3) Specialist Departments

However Captains being the Ultimate Command Authority might change that and make their CMO the XO or the second in Command, Or decide that the CEO is more capable than anyone to Command after him/her.

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The CONN. Officer is defacto an Acting Captain and has almost the same Authorities. Limited to the fact that the Captain is there and any the Conn can be taken from any higher Ranking  Command Officer.(Unless otherwise specified by the Captain)