High Quality Content by WIKIPEDIA articles! The Anglo-French Supreme War Council, sometimes known as the Supreme War Council (SWC), was established to oversee joint military strategy at the start of the Second World War. Most of its deliberations took place during the period of the Phoney War, with its first meeting at Abbeville on 12 September 1939. The final three sessions were held in France (Paris, Briare and Tours) during the German Blitzkrieg of May and June 1940.