Nearly a hundred German divisions had been used against the British alone in the great offensive which began on March 21 and ended in the first week of April. At this time the British forces in France, including Portuguese and Overseas divisions, numbered sixty in all. Of these no less than forty-four had been engaged in the great battle, and all of these were either still in the line, tied to the Amiens front, or else had been drawn out in a shattered and disorganised condition, having lost on an average not less than from 4000 to 5000 men each. It will be seen that there was only a very small margin over, and that if the Germans by a supreme effort had burst the line and reached the estuary of the Somme, it would have been possible to have caused a great military disaster. Especially would this have been the case if the northern flank {224} of the British could have been driven in as well as the southern, for then the mutilated and shaken army would have been hurled in upon itself and would have found itself crowded down upon a sea-coast which would have given few facilities for embarkation. In the hopes of a débacle in the south the Germans had prepared out of their huge reserves a considerable force in the north which would have formed the second claw of their deadly embrace. When the first claw missed its grip and could get no farther it was determined that the other should at least go forward and endeavour to reach the Channel ports. Although the Somme estuary had not been attained, none the less the Germans knew well that three-quarters of the whole British force had been engaged, and that most of it was not fit to take its place in a renewed battle. Therefore they had reason to hope for great results from their new offensive in Flanders, and they entered upon it with a good heart. The omens were certainly propitious, but there were two factors which were in favour of the British--factors which could not yet have been adequately appreciated by the Germans. The first was the new unity of command under General Foch, a soldier famous for his writings in peace and for his deeds in war. This great leader, who had distinguished himself again and again since the first month of the war, when he had played a vital part in checking the German rush for Paris, was selected with the cordial consent of every one concerned, and especially of Sir Douglas Haig, as Generalissimo of the Allied forces. Therefore a common control and a common policy were ensured, so that the German chiefs could not {225} turn their whole force upon half of the Allies with the assurance that the other half would find the operations outside their war map. Hence the British in Flanders, though they would have to fight their own battle for a week or two, could count confidently upon receiving help at the end of that time.