That day saw the end of the main crisis of the battle. Mont Kemmel was lost and regained more than once, but the enemy was quickly becoming exhausted, and his gains, even when he made them, had no longer any strategic value. By the end of April he had employed in that one area of the line thirty-five fresh divisions, and nine which had been already in action. These troops were the cream of his army, and could not be replaced. Moreover, an odd feature had appeared in the last stages of the Lys battle. In March the enemy had succeeded in piercing and dislocating the British front by a new tactical method applied with masterly boldness and precision, the method which has been described as "infiltration."[#] But as the Lys battle dragged on the Germans seemed to have forgotten these new tactics, and to have fallen back upon their old methods of mass and shock. The reason was that the new tactics could only be used with specially trained troops, and with fresh troops; they put too great a strain on weary divisions and raw levies; therefore, as the enemy’s losses grew, his tactics would deteriorate in the same proportion. [#] See p. 36. If we take 5th May as marking the close of the Battle of the Lys, we may pause to reflect upon the marvels of the forty-five preceding days, since the enemy torrent first broke west of St. Quentin. More history had been crowded into their span than into many a year of campaigning. They had seen the great German thrust for Amiens checked in the very moment of success. They had seen the last bold push for the Channel Ports held up for days by weak divisions which bent but did not break, and finally die away with its purpose still far from achievement. In those forty-five days divisions and brigades had been more than once destroyed as units, and always their sacrifice had been the salvation of the British front. The survivors had behind them such a record of fruitful service as the whole history of the war could scarcely parallel. *CHAPTER XII.* *THE SECOND BATTLE OF THE MARNE.* The First Battle of the Marne meant the frustration of Germany’s main battle purpose, and the disappearance for ever of her hope of a complete and decisive victory. The Second Battle of the Marne in July 1918 was the beginning of Germany’s defeat. In both battles the armies of Britain contributed to victory, but in both battles, as was right and proper, the main work was done by the French, and with them lies the chief glory.