What is the structure of the shoulder insignia for a Commander (O-5)?

The structure of the shoulder insignia for a Commander (O-5) in the naval services features four stripes and one star. This insignia represents the rank of Commander, which is a senior officer rank. The four stripes symbolize the officer's experience and leadership within the organization.

The other choices pertain to different ranks within the military hierarchy. One gold oak leaf signifies the rank of Lieutenant Colonel (O-5) in the Army, Air Force, and Marine Corps, while two silver bars typically represent the rank of Captain (O-3). Three stripes and one star do not correspond to any standard military rank, thus making that option incorrect as well. Understanding these distinctions is crucial for recognizing the progression of ranks and the insignia associated with each level of responsibility.