What rank does O-5 represent within the Marine Corps?

The rank O-5 within the Marine Corps represents a Lieutenant Colonel. In the military ranking system, the assignment of ranks is closely tied to the "O" designations, which denote officer ranks. Specifically, O-5 aligns with the grade of Lieutenant Colonel, a rank that is crucial in terms of leadership and operational responsibilities. A Lieutenant Colonel typically commands a battalion-sized unit and plays a vital role in higher-level planning and execution of missions.

Understanding this rank is particularly important for cadets, as it reflects the hierarchy and structure within the armed services, which is essential knowledge for any servicemember or cadet participating in military training and operations. The other ranks listed correspond to different O-designations, with Major being O-4 and Colonel being O-6, and Captain being O-3; thus reinforcing the importance of correctly identifying officer ranks within the structure.