It was no piece of fruitless gallantry. Dawson, as he was tramping eastwards, saw a sight which told him that his decision had been right, and that his work had not been in vain. The whole road for miles east of Bouchavesnes was blocked by a continuous double line of transport and guns, which proved that the South Africans had for over seven hours held up not only a mass of German infantry, but all the artillery and transport advancing on the Bouchavesnes-Combles highway. Indeed, it is not too much to say that on that feverish Sabbath the stand of the brigade saved the British front. It was the hour of Von der Marwitz's most deadly thrust. While Gough was struggling at the Somme crossings, the Third Army had been forced west of Morval and Bapaume, far over our old battle-ground of the First Battle of the Somme. The breach between the two armies was hourly widening. But for the self-sacrifice of the brigade at Marrières Wood and the delay in the German advance at its most critical point, it is doubtful whether Byng could ever have established that line on which, before the end of March, he held the enemy.
By 6th April 1918 the great German thrust towards Amiens had failed, and for the moment the gate of the Somme was closed. The city was under fire, the enemy was before its gates, but his strength was exhausted and he could not advance. Therefore his chief plan--of separating the French and the British--had come to nought. Brought to a standstill, he cast about for a diversion, for he could not permit the battle to decline into a stalemate, since he was fighting against time. His main purpose remained the same, but he sought to achieve it by a new method. He would attack the British elsewhere, on some part of the front where they were notoriously weak, and compel Foch to use up his reserves in its defence. Then, when the Allied resources had shrunk, he would strike again at the weakened door of Amiens. On the German side the operation was meant to be merely subsidiary, designed to prepare the way for the accomplishment of the main task farther south. They proposed to choose a battle-ground where even a small force might obtain important results. But so stoutly did the meagre British divisions resist that the enemy was compelled to extend the battle well into May, to squander thirty-five of his fresh divisions, and to forfeit for good his chance of final victory.