Clip from the 1977 movie "March or Die" , Major Foster orders the singing of "Le Boudin". "Le Boudin", officially "Marche de la Légion Étrangère" (March of the Foreign Legion), is the official march of the French Foreign Legion. "Le Boudin" is a reference to boudin, a type of blood sausage or black pudding. Le boudin colloquially meant the gear (rolled up in a blanket) that used to be carried atop the backpacks of Legionnaire. March or Die is a 1977 British war drama film directed by Dick Richar