 The Irish Brigade was the subject of the original version of a song, "Kelly's Irish Brigade", after its commander, Patrick Kelly.This has caused a dispute, with those who attribute the song to a known Confederate song of the same name (even sung to the same tune) though both are seen as of the time.Though the most prevalent and recognised of the 'Irish regiments', several other notable regiments that were largely composed of Irish immigrants also distinguished themselves in the field.