The “Marines’ Hymn” is the official hymn of the United States Marine Corps, introduced by the first director of the USMC Band, Francesco Maria Scala. Its music originates from an 1867 work by Jacques Offenbach with the lyrics added by an anonymous author at an unknown time in the following years. Authorized by the Commandant of the Marine Corps in 1929, it is the oldest official song in the United States Armed Forces.[1] The “Marines’ Hymn” is typically sung at the position of attention as a gesture of respect. However, the third verse is also used as a toast during formal events, such as the birthday ball and other ceremonies. Some lyrics were popular phrases before the song was written. The line “To the shores of Tripoli” refers to the First Barbary War, and specifically the Battle of Derna in 1805.[2][3] After Lieutenant Presley O’Bannon and his Marines hoisted the American flag over the Old World for the first time, the phrase was added to the flag of the United States Marine Corps. “The Halls of Montezuma” refers to the Battle of Chapultepec on 12/13 September 1847 during the Mexican–American War, where a force of Marines stormed Chapultepec Castle. Strictly, the usage “Halls of Montezuma” is poetic license, as the building which the Marines stormed had been erected by the Spanish rulers of Mexico, more than two centuries after the Aztec Emperor Montezuma was overthrown. At the time of the assault, the fort was actually the newly founded Mexican Military Academy. Prior to Mexican independence one of the Spanish viceroys had built a personal residence on the hill (1786). However, in Aztec times Chapultepec Hill and its hot springs were a royal spa. Marine Corps tradition maintains that the red stripe worn on the dress-blues trousers of officers and noncommissioned officers, and commonly known as the blood stripe commemorates the high number of Marine NCOs and officers killed storming the castle of Chapultepec in September 1847. As noted, While the lyrics are said to date from the 19th century, no pre-20th century text is known. The author of the lyrics is likewise unknown. Legend has it that a Marine on duty in Mexico penned the hymn. The unknown author transposed the phrases in the motto on the Colors so that the first two lines of the Hymn would read: “From the Halls of Montezuma, to the Shores of Tripoli”, favoring euphony over chronology.