What is the insignia for E-4 in the Navy?

The insignia for E-4 in the Navy is indeed one eagle above two chevrons. This rank, known as Petty Officer Third Class, is signified by the eagle, which represents the rank and authority the service member has achieved, along with the two chevrons that signify their progression within the enlisted ranks. The combination of these elements clearly identifies the individual as an E-4, distinguishing them from lower ranks, which have fewer or different symbols.

In contrast, ranks above E-4 have additional chevrons or other insignia elements. For instance, E-5 has one eagle above three chevrons, while E-6 has one eagle above four chevrons. The insignia structure is crucial for maintaining order and clarity within the naval hierarchy, allowing service members to quickly identify each other’s ranks by their respective insignia.