What is the collar device of a Lieutenant Junior Grade in the Navy?

The collar device of a Lieutenant Junior Grade in the Navy is a silver bar. This insignia is part of the rank structure within the Navy and is specifically assigned to officers at the Lieutenant Junior Grade level. The use of a silver bar signifies their position, distinguishing them from other ranks.

In the Navy hierarchy, the collar devices help in visually identifying the rank of the officer, which is essential for order and recognition within the naval community. The use of a single silver bar for Lieutenant Junior Grade showcases their junior officer status, as it is different from the insignias used for higher ranks such as a full Lieutenant, which is represented by two silver bars.