Colonel
From Starbase 900 Wiki
In the Starfleet Marine Corps, Colonel is a senior military officer rank just above the rank of Lieutenant Colonel and just below the rank of Brigadier General. It is equivalent to the naval rank of Captain in the fleet services. Colonels usually command infantry brigades or regiments with a Lieutenant Colonel as executive officer and a Command Sergeant Major as a senior non-commissioned officer advisor. Colonels are sometimes referred to (but not addressed) as full-bird colonels or "O-6," which is their pay grade, in order to differentiate between Colonels and Lieutenant Colonels, since the latter are also referred to and addressed as simply "colonel."
