"O'Malley's March" is a traditional Irish folk song that tells the story of a group of soldiers marching to join the fight for their country. The song captures the spirit of camaraderie and determination among the soldiers as they prepare for battle. It reflects themes of loyalty and sacrifice, common in many Irish songs. The song is often associated with the Irish War of Independence and has been performed by various artists, including The Dubliners and The Clancy Brothers. Its lively melody and poignant lyrics make it a popular choice at gatherings and celebrations of Irish culture.