For a time there was no considerable action along the British line, but there were large movements of troops which brought about an entirely new arrangement of the forces, as became evident when the operations were renewed. Up to the date of the Battle of Messines the Belgians had held the ground near the coast, and the five British Armies had lain over their hundred-mile front in the order from the north of Two, One, Three, Five, and Four. Under the new arrangement, which involved a huge reorganisation, it was the British Fourth Army (Rawlinson) which came next to the coast, with the Belgians upon their immediate right, and an interpolated French army upon the right of them. Then came Gough's {115} Fifth Army in the Ypres area, Plumer's Second Army extending to the south of Armentières, Horne's First Army to the south end of the Vimy Ridge, and Byng's Third Army covering the Cambrai front, with dismounted cavalry upon their right up to the junction with the French near St. Quentin. Such was the general arrangement of the forces for the remainder of the year. Save for unimportant readjustments, there were no changes for some time along the Messines front, and little activity save at the extreme north of that section on the Ypres-Comines Canal. Here the British gradually extended the ground which had been captured by the Forty-seventh Division, taking some considerable spoil-heaps which had been turned into machine-gun emplacements by the Germans. This supplementary operation was brought off upon June 14 and was answered upon June 15 by a German counter-attack which was completely repulsed. Some brisk fighting had broken out, however, farther down the line in the Lens sector which Holland's First Corps, consisting of the Sixth, Twenty-fourth, and Forty-sixth Divisions, had faced during the Battle of Arras. This sector was rather to the north of the battle, and the German line had not been broken as in the south. These divisions had nibbled their way forward, however, working up each side of the Souchez River until they began to threaten Lens itself. The Germans, recognising the imminent menace, had already blown up a number of their depots and practically destroyed everything upon the surface, but the real prize of victory lay in the coal seams underground. Huge columns of black smoke which rose over the shattered chimneys and winding gears {116} showed that even this, so far as possible, had been ruined by the enemy.