Up to July 18, 1918, the Allied armies in France had been steadily on the defensive, but on that date the tide turned. General Foch, who had been yielding territory for several months in the great German drives, now assumed the offensive himself and began the series of great drives which was to crush the German power and drive the enemy in defeat headlong from France.

The first of these great blows was the one which began with the appearance of the Americans at Chateau-Thierry. The Germans had formed a huge salient whose eastern extremity lay near Rheims, and its western extremity west of Soissons. It was like a great pocket reaching down in the direction of Paris from those two points. Against this salient the French and Americans had directed a tremendous thrust. The Germans resisted with desperation. It was the turning point of the war, but they were compelled to yield. Town after town was regained by the French and American troops, until, by August 5th, the Crown Prince had been driven from the Marne to the Vesle, and the salient obliterated.

On August 7th General Foch delivered his second blow. During the fighting on the Marne it had often been wondered by those who were observing the great French general's strategy, why the British seemed to make no move. Occasionally there had been reports of minor assaults, either on the Lys salient, far north, or on the Somme and Montdidier sectors, lying between. It had not been noticed that in these minor assaults the English had been obtaining positions of strategic importance, and that they were steadily getting ready for an English offensive.

But their time had now come, and on August 7th the armies of Sir Douglas
Haig began an attack against the armies of Prince Rupprecht on the Lys
salient. This was followed, on August 8th, by another still greater
Allied advance in Picardy, between Albert and Montdidier.

Both of these attacks met with notable success. On the Lys salient the English penetrated a distance of one thousand yards over a four-mile front, and followed up this advance by persistent attacks which led to the reoccupation, on August 19th, of Merville, and on August 31st, of Mont Kemmel. On this front the Germans had weakened their strength by withdrawing troops to aid other parts of their front, and the British were constantly taking advantage of this weakening.

The Germans had found this salient a failure. It had failed to attain its objective, the flanking of the Lens line south. They therefore were steadily retreating without any intention other than to extricate themselves from positions of no value, in the most economical manner. The quick operations of the British, however, led to the capture of many prisoners and guns.

The English offensive in Picardy was a more serious matter, and from some points of view was the greatest offensive in the war. The Allied front had been prepared for offensive operations by minor attacks which had secured for the Allied troops dominating positions. The attack was a surprise attack. The Germans were expecting local attacks but not a movement of this magnitude. The surprise was increased because it was made through a heavy mist which prevented observation. It was preceded by tremendous artillery fire which lasted for four minutes, and which was followed by the charge of infantry and tanks. The German artillery hardly replied at all, and only the resistance of a few rifles and machine guns fired vaguely through the fog met the charging troops.

The attack was on a twenty-five-mile front and on the first day gained seven miles, captured seven thousand men and a hundred guns. On the following day there was an advance of about five miles and seventeen thousand more prisoners were captured.

The Germans were now retiring in great haste, blowing up ammunition dumps and abandoning an enormous quantity of stores of all kinds. The English were using cavalry and airplanes, which were flying low over the field and throwing the German troops into confusion. Over three hundred guns, including many of heavy caliber, were captured. The ground had been plowed up by shells and thousands of bodies of men and horses were found lying where they fell. A feature of the attack was the swift whippet tanks which advanced far ahead of the infantry lines.

[Illustration: Photograph]
Copyright Western Newspaper Union
British Official Photo
FORWARD WITH THE TANKS AGAINST BAPAUME
This picture gives an excellent idea of the method of combined tank
and infantry attack. Behind a low ridge among artillery positions they
are forming their line. A company falls in behind one of the waddling
monsters that will break a way for it through all obstacles, while on
both sides of the road other detachments await the arrival of the tank
they are to accompany.