Weygand drew up the memorandum for the meeting of Foch with the national commanders-in-chief (Haig, Pétain and John J. Pershing) on 24 July 1918, the only such meeting before the autumn, in which Foch urged (successfully) the liberation of the Marne salient captured by the Germans in May (this offensive would become the Second Battle of the Marne, for which Foch was promoted Marshal of France), along with further offensives by the British and by the Americans at St Mihiel. Weygand personally delivered the directive for the Amiens attack to Haig. Foch and Weygand were shown around the liberated St. Mihiel sector by Pershing on 20 September.