What is the rank insignia for a Navy or Marine Corps O-9?

The rank insignia for a Navy or Marine Corps O-9, which corresponds to the rank of Vice Admiral in the Navy and Lieutenant General in the Marine Corps, is represented by three silver stars. This insignia indicates a high level of authority and responsibility within the hierarchy of military ranks.

In understanding naval ranks, it's important to note that each additional silver star symbolizes a higher rank, with one star representing Rear Admiral (Lower Half), two stars representing Rear Admiral (Upper Half), and three stars indicating the rank of Vice Admiral or Lieutenant General, depending on the service branch. This system allows for a clear visual representation of an officer's rank and their corresponding level of command and seniority.