What does the insignia for O-5 in the Marine Corps look like?

The insignia for an O-5 in the Marine Corps is represented by a silver oak leaf. This symbol is significant as it denotes the rank of a Lieutenant Colonel, which is the O-5 pay grade within the Marine Corps. The oak leaf symbolizes strength and endurance, which are essential qualities in military leadership.

In the context of military rank insignia, different symbols are used to represent various ranks, making it crucial to recognize each one. The silver oak leaf is specifically associated with the O-5 rank, distinguishing it from other ranks such as Major (O-4), represented by a gold oak leaf, and Colonel (O-6), which uses a silver eagle. Understanding these insignia is vital for identifying the ranks of personnel within the Marine Corps effectively.