Maverick (1957)

S04E14 The Bold Fenian Men

The Fenians, an Irish revolutionary group composed of skilled soldiers, are committed to liberating Ireland from British control. They convene in Dakota City to strategize a march into Canada, aiming to seize a small British territory as leverage for Ireland's independence. When England exerts pressure on the United States to step in, Beau Maverick finds himself coerced by a cunning Army colonel into going undercover within the Fenians.