The spearhead of the Free French First Army that had landed in Provence was the Ist Corps. Its leading unit, the French 1st Armoured Division, was the first Western Allied unit to reach the Rhône (25 August 1944), the Rhine (19 November 1944) and the Danube (21 April 1945). On 22 April 1945, it captured Sigmaringen in Baden-Württemberg, where the last Vichy regime exiles, including Marshal Pétain, were hosted by the Germans in one of the ancestral castles of the Hohenzollern dynasty.