Petty officer third class

Petty Officer Third Class is the fourth enlisted rank of the UNSC Navy, and is the lowest rank of non-commissioned officer. It is equal in rank to Corporal in the UNSC Marine Corps.

In informal settings, Petty Officers Third Class are typically called "Petty Officer".

Known Petty Officers Third Class

 * Petty Officer Third Class Pauley
 * Petty Officer Third Class Cho
 * Tech Officer Sam Marcus