French attacks north of the Somme were resumed on 30 August by the 11th Division and the 39th Division, after delays caused by bad weather. The Germans had dispersed into new smaller positions in greater depth, many of which were concealed by crops several feet high. The attack was "devastated" by German artillery and machine-gun fire, contact with the front was lost when telephone lines were cut and fog made visual signalling impossible; most of the French infantry were forced back to their start line, with Operations south of the Somme were transferred to the Tenth Army and artillery reinforcements arrived on both sides of the Somme. The Sixth Army captured the Hem plateau on the north bank from by stages, before a bigger attack on 12 August captured the German second line from the Somme to Maurepas. Attacks on German positions on the army boundary to the north and around Guillemont failed. The French mopped up the remaining German defences in the second position, which brought the Sixth Army to a position from which it could attack a German intermediate line between Le Forêt and Cléry, in front of the third position, beyond which there were no more German defences.