Louis Paul André Chack, (12 February 1876 – 9 January 1945), was a French Navy officer, author and Nazi collaborator. He served in the Navy during the First World War and spent the interwar period writing books on naval history and agitating at the far right. During the Second World War, he eagerly collaborated with the Nazis and presided a so-called "Comité d'action antibolchévique" ("Committee for Anti-Bolshevik Action"). At the Liberation, he was arrested, tried for treason and executed by firing squad. Source: Wikipedia (en)