What collar device is recognized for a Commander?

The collar device recognized for a Commander in the U.S. Navy is represented by a silver eagle. This insignia signifies the rank of Commander, which is an O-5 rank in the Navy. The silver eagle's wings are spread, symbolizing strength and authority, and it serves as a clear identifier of the Commander's leadership position.

In terms of hierarchy, the silver eagle distinguishes a Commander from other ranks, such as a Lieutenant Commander, who is represented by a gold oak leaf, and a Captain, who typically has the insignia of a silver star. Additionally, the silver eagle serves as a point of recognition both within the Navy and among other branches, reinforcing the established rank structure and ensuring proper protocol in the chain of command.