"One Man's Hero" (1999) tells the compelling story of a group of Irish immigrants who join the Union Army during the American Civil War. The film centers around the character of Captain John Riley, portrayed by Tom Berenger, who leads a battalion of Irish soldiers known as the "Fighting 69th." As they navigate the brutal realities of war, the film explores themes of loyalty, identity, and the struggle for acceptance in a society that often marginalizes them. Riley's journey is marked by personal sacrifice and the quest for honor, ultimately highlighting the complexities of patriotism and the sacrifices made by those who fight for a cause greater than themselves. Through intense battle scenes and poignant character development, "One Man's Hero" sheds light on the often-overlooked contributions of immigrant soldiers in American history.