simple gold bar is official military insignia, it represents the rank of Second Lieutenant (1$O$-2$1$) in the Army, Air Force, and Marine Corps, or an Ensign in the Navy and Coast Guard.3Military Rank IdentificationRank: Second Lieutenant (4$2LT$ / 5$O$-6$1$) or Ensign (7$ENS$).8Insignia: A single solid gold bar.9Precedence: Interestingly, in the U.S. military, gold is junior to silver. A Second Lieutenant (gold bar) is the entry-level officer rank, while a First Lieutenant (silver bar) is the next rank up.10Responsibility: A Second Lieutenant typically leads a platoon of 16 to 44 soldiers.
