What is the collar device of an Ensign in the Navy?

The collar device of an Ensign in the Navy is represented by one gold bar. This insignia signifies the rank of an Ensign, which is the lowest commissioned officer rank in the Navy. The use of a gold bar helps to visually differentiate the rank from others, with the color and style of the insignia being consistent across various uniforms and ranks within the Navy's hierarchy.

A gold bar is symbolic of the officer's position and responsibilities within the naval service, denoting their status as a commissioned officer who has undergone the necessary training and has been entrusted with leadership roles. This standardization of insignia across the service allows for immediate recognition of rank, promoting order and clarity in military structure.