Simplify the following text for a Grade 5 native English-speaking person.
Original: The name of the song was originally Chant de guerre pour l'Arm Ã e du Rhin ( `` War Song for the Army of the Rhine '' ) .
Simplified: It was first called `` Chant de guerre pour l'arm Ã e du Rhin '' ( `` Marching Song of the Rhine Army '' ) .