One Man's Hero

One Man's Hero streams in the US on ScreenPix Apple TV channel, and free with ads on The Roku Channel and Tubi TV, as of October 5, 2026.

One man's hero is another man's traitor.

One Man's Hero tells the little-known story of the "St. Patrick's Battalion" or "San Patricios," a group of mostly Irish and other immigrants of the Catholic faith who deserted to Mexico after encountering religious and ethnic prejudice in the U.S. Army during the Mexican-American War. The plot centers around the personal story of John Riley, an Irishman who had been a sergeant in the American Army who is commissioned as a captain in the Mexican army and commands the battalion, as he leads his men in battle and struggles with authorities on both sides of the border