The Marine's Hymn
The "Marines' Hymn" is the
 official hymn of the United States
 Marine Corps. It is the oldest
 official song in the United States
 military.

The song has an obscure
 origin—the words date from the
 19th century, but no one knows
 the author. The music is from the
 Gendarmes' Duet from the opera
 Geneviève de Brabant by Jacques
 Offenbach, which debuted in Paris
 in 1859. The Marine Corps secured 
a copyright on the song on August
 19, 1919, but it is now in the public
 domain.

The initial verse is "From the Halls of Montezuma to the Shores of Tripoli." "Montezuma" refers to the Battle of Chapultepec, more commonly known as the battle which took place during the Mexican-American War; "Tripoli" refers to the First Barbary War and the Battle of Derne.

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 events important to the Corps such as the Marine Corps birthday, promotions, and retirements. Note the line "Here's health to you and to our Corps."

Official Lyrics

From the halls of Montezuma,
To the shores of Tripoli;
We will fight our country's battles
In the air, on land, and sea;
First to fight for right and freedom
And to keep our honor clean;
We are proud to claim the title
Of United States Marine.

Our flag's unfurled to every breeze
From the dawn to setting sun;
We have fought in every clime and place
Where we could take a gun;
In the snow of far-off northern lands
And in sunny tropic scenes;
You will find us always on the job
The United States Marines.

Here's health to you and to our Corps
Which we are proud to serve;
In many a strife we've fought for life
And have never lost our nerve;
If the Army and the Navy
Ever look on Heaven's scenes;
They will find the streets are guarded
By United States Marines.