What is johnny comes marching home lyrics?

"Johnny Comes Marching Home" is a popular patriotic song that originated during the American Civil War. The lyrics were written by Patrick Gilmore in 1863, and the music is a traditional Irish tune called "The Ants Marching." The song celebrates the return of a soldier named Johnny from war and describes the joyous reception he receives upon his arrival home. The song became an instant hit and has since been recorded and adapted by numerous artists. It has been used in movies, television shows, and even political campaigns. The song remains one of the most iconic and enduring patriotic songs in American history.