Whilst giving the German army every credit for its tenacious resistance and for the hard digging by which it constructed so many lines of defence that five months of hard fighting and a dozen separate victories had been unable to carry the attackers through them, we must still insist upon the stupendous achievement of the British. Nearly every division had passed through the fiery ordeal of the Somme, many of them twice and thrice, and each had retired with fresh honour and new records of victory. Apart from great days of battle like July 1, July 14, September 15, and September 26, when many miles of German trench were carried with a corresponding number of prisoners and guns, there was a separate epic round each village and wood, so that the names of many of them will find immortality in military history. High Wood, Trones Wood, Mametz Wood, and Delville Wood each represents a very terrible local battle. So, too, do such village names as Ovillers, Contalmaison, Pozières, Thiepval, Longueval, Ginchy, and especially Guillemont. {307} Every one of these stern contests ended with the British infantry in its objective, and in no single case were they ever driven out again. So much for the tactical results of the actions. As to the strategic effect, that was only clearly seen when the threat of renewed operations in the spring caused the German army to abandon all the positions which the Somme advance had made untenable, and to fall back upon a new line many miles to the rear. The Battle of the Marne was the turning-point of the first great German levy, the Battle of the Somme that of the second. In each case the retirement was only partial, but each clearly marked a fresh step in the struggle, upward for the Allies, downward for the Central Powers.