Over There. Words and Music by George M. Cohan. Successfully Introduced by Nora Bayes. William Jerome Publishing Corp, New York, 1917. Courtesy of the Ward Irish Music Archives.
First Line: Johnnie get your gun, get your gun, get your gun
First Line of Chorus: Over there, over there, send the word, send the word, over there
Was written while Cohan was riding on a train after hearing the news that America had entered the Great War. It became the rallying song for American troops and to this day is the one song most Americans associate with WW I.