What collar device does a Petty Officer First Class (E-6) wear?

A Petty Officer First Class (E-6) in the Navy wears the collar device that consists of one eagle above three chevrons. This insignia represents the rank of Petty Officer First Class, indicating a level of leadership and responsibility within the enlisted ranks. The eagle symbolizes the authority of the rank, while the three chevrons signify the progression and skills a service member has achieved in their naval career.

In the context of Navy ranks, the insignias are carefully designed to reflect the hierarchy and experience level. For instance, an Eagle above one chevron would represent a lower rank, specifically a Petty Officer Third Class, while an eagle above four chevrons would signify a Chief Petty Officer (E-7) or higher. Hence, the combination of the eagle and three chevrons distinctly marks the E-6 rank. Understanding this hierarchy and the specific insignias is crucial for anyone training in Navy Officer Candidate School, as it reflects knowledge of rank structure and military customs.