Lieutenant colonel

N.B.: This rank has not yet been mentioned in the Halo Universe.

Lieutenant Colonel is a commissioned officer rank of the UNSC Marine Corps, equal in rank to Commander in the UNSC Navy.

In informal settings, Lieutenant Colonels are referred to simply as "Colonel".

A Lieutenant Colonel is an aide to a Colonel, who is in charge a regiment. "Lieutenant to the Colonel"

A Lieutenant Colonel is an aide to a Colonel, who is in charge a regiment. "Lieutenant to the Colonel"