Some stress has in this narrative been laid upon the fact that the difficulties to be overcome in the south were less than those in the north. Such an assertion is only fair to the gallant men who failed. At the same time nothing should detract from the credit due to those splendid southerly divisions who really won the battle and made the hole through which the whole army eventually passed. Though the French operations do not primarily come within the scope of this record, it is necessary to give some superficial account of them, since they form an integral and essential part of the battle. So important were they, and so successful, that it is not too much to say that it was the complete victory upon their line which atoned for our own want of success in the north, and assured that the balance of this most bloody day should be in our favour. It is true, as they would be the first to admit, that the troops of General Foch had none of those impassable barrages, concentrations of machine-guns, and desperately defended inner lines of trenches which {99} inflicted such losses upon our stormers. Both the positions and the men who held them were less formidable. On the other hand, it is for us to bear in mind that the French had already made their great effort in the common cause at Verdun, and that this attack upon the West was primarily a British offensive in which they were playing a subsidiary part. It is the more remarkable that their success should have been so great and that they should have been able for months to come to play so notable a part in the battle that the tale of their prisoners and booty was not less than our own. The attack of the British was roughly upon a twenty-mile front, from the Gommecourt salient to Maricourt. On this stretch they broke the German lines for 7 miles from the north of Fricourt to Montauban. The French front was about 8 miles long, and moved forward for its whole extent. Thus it may be said that the whole battle line was 28 miles, and that more than one-half, or 15 miles, represented the area of victory. During the whole operations for many months the French army was cut in two by the marshy valley of the Somme, the detachment to the north of it acting in close unison with the British Thirteenth Corps upon their left. We will call these the northern and the southern French armies, both being under the direction of General Foch.