Which collar device represents the rank of O-1 for NJROTC?

The rank of O-1 in the NJROTC (Naval Junior Reserve Officers' Training Corps) is represented by a gold bar. In military ranking systems, gold bars are indicative of the lowest officer rank, which is Second Lieutenant or Ensign, depending on the branch of service. This specific insignia serves as a visual cue to signify the officer's rank and authority within the structure of NJROTC.

Understanding the significance of the gold bar helps clarify the progression of ranks within the structure. Each rank above O-1 has its own designated insignia, which typically involves some combination of gold and silver elements or increased numbers of bars or stars to reflect a higher level of responsibility and experience. Thus, recognizing the gold bar as the correct representation of the O-1 rank is essential for students familiarizing themselves with military insignias and rank interpretations.