The Diary here notes “Thus ended the retreat from Mons.” This is not strictly correct. In twelve days the British Army had been driven back 140 miles as the crow flies from Mons, and farther, of course, by road. There was yet to be a further retirement of some fifteen miles south of Esbly ere the general advance began, but September 3 marks, as nearly as may be, slack-water ere the ebb that followed of the triumphant German tidal wave through Belgium almost up to the outer forts of Paris. That advance had, at the last moment, swerved aside from Paris towards the south-east, and in doing so had partially exposed its right flank to the Sixth French Army. General Joffre took instant advantage of the false step to wheel his Sixth Army to the east, so that its line ran due north and east from Ermenonville to Lagny; at the same time throwing forward the left of his line. The British Force lay between Lagny and Cortecan, filling the gap between the Sixth and Fifth French Armies, and was still an effective weapon which the enemy supposed they had broken for good. But our harried men realized no more than that, for the moment, there seemed to be a pause in the steady going back. The confusion, the dust, the heat, continued while the armies manœuvred for position; and scouts and aerial reconnaissance reported more and more German columns of all arms pressing down from the east and north-east. On September 3 the 4th Brigade moved from Esbly, in the great loops of the Marne, through Meaux to the neighbourhood of Pierre Levée, where the Battalion fed once more on requisitioned beef, potatoes, and apples. THE ADVANCE TO THE AISNE Next day (September 4), while the British Army was getting into position in the process of changing front to the right, the 4th Brigade had to cover a retirement of the 5th Brigade between Pierre Levée and Le Bertrand, and the Battalion dug itself in near a farm (Grand Loge) on the Pierre Levée-Giremoutiers road in preparation for a rear-guard attack that did not arrive. They remained in position with what the Diary pathetically refers to as “the machine-gun,” till they were relieved in the evening by the Worcesters, and reached bivouac at Le Bertrand at one o’clock on the morning of the 5th September. That day they bivouacked near Fontenay, and picked up some much-needed mess-tins, boots, putties and the like with which to make good more immediate waste.