After meeting with Sir John French and Lanrezac (commander of Fifth Army), who were barely on speaking terms, at St Quentin on the morning of 26 August, and hearing reports (which later turned out to be exaggerated) of the destruction of British II Corps at Le Cateau, Joffre became deeply concerned at the weakness of his left flank and the risk of the British Expeditionary Force being overrun. That night he enacted "Instruction No 2", ordering a new army to be formed under Maunoury around Amiens on the French west flank, consisting of four reserve divisions and a corps. He also dissolved the Army of Lorraine and sent its staff to Maunoury's new army, although not its divisions which were reabsorbed into Third Army. He also dissolved Pau’s Army of Alsace.