This is (for the moment) the list of official community ranks. I plan on adding some special ranks later on but these are the basic ones. You can rank up through site activity or be promoted directly by an administrator.
Enlisted Ranks::
Private
Private First Class
Specialist
Corporal
Sergeant
Staff Sergeant
Sergeant First Class
Master Sergeant
First Sergeant
Sergeant Major
Command Sergeant Major
Sergeant Major of the Army
Officer Ranks::
2nd Lieutenant
1st Lieutenant
Captain
Major
Lieutenant Colonel
Colonel
Brigadier General
Moderator Ranks::
Major General
Lieutenant General
Administrator Ranks::
General
General of the Army