What insignia is used for U.S. Navy Commanders on a flagstaff?

The insignia used for U.S. Navy Commanders on a flagstaff is accurately identified as a star. Specifically, a single silver star is employed to represent the rank of Commander. This visual representation on a flagstaff serves to denote the command authority and role of the individual in a leadership position within the Navy.

Using a star as the insignia is consistent with the symbolism associated with naval ranks, where different ranks are indicated by the number of stars—hence, for a Commander, a single star is appropriate. This visual cue helps other naval personnel and visitors recognize the rank and status of the officer in command, enhancing clarity in hierarchical structures.

The other insignia options are utilized for different purposes in naval rank designations or may represent other affiliations, but they do not accurately correspond to the established representation for a U.S. Navy Commander on a flagstaff.