By the 24th, however, these intentions had been measurably revealed, both by documents found on prisoners and by the general tendency of the battle. On that day the enemy succeeded in crossing the Somme south of Péronne, while north of it he forced the British to retire from the line of the River Torille. On the same day Chauny and Ham were captured, the British 3d and 4th Armies were pressed behind Péronne and Ham, and the 5th Army almost lost contact with the French. Here began that wonderful feat which has made the name of General Carey famous. On the 25th the enemy, by a series of drives en masse, managed to envelop Bapaume, while south of Péronne he made still further progress, "west of the Somme." [Illustration: DETAIL MAP OF NORTHERN SECTOR OF BATTLE OF PICARDY, WHERE HEAVY BLOWS WERE STRUCK BY THE GERMANS IN THEIR DRIVE TOWARD AMIENS AND THE ENGLISH CHANNEL. THE FIGHTING WAS ESPECIALLY HEAVY AROUND PERONNE AND ALBERT] [Illustration: DETAIL MAP OF SOUTHERN PORTION OF BATTLEFIELD, SHOWING LA FERE AND TERGNIER. WHERE GERMANS TRIED TO DRVE A WEDGE BETWEEN BRITISH AND FRENCH ARMIES. THE BATTLE SWEPT WESTWARD PAST ROYE AND MONTDIDIER] Nesle was lost and recovered several times by the French troops, who had already begun to relieve certain portions of the British right, with its unlucky 5th Army, as early as the 23d. In the engagements between Bapaume and Péronne the German armies of von Below, who had just returned from Italy, and von der Marwitz were personally directed by Crown Prince Rupprecht, and outnumbered the British three to two. [Illustration: DETAIL MAP OF THE STRUGGLE FOR ARRAS] THE STRUGGLE FOR ALBERT From the 25th to the 27th there was a lull in the north, evidently conceived by the Germans for bringing their heavier guns up to new emplacements, but in the south during this time the enemy heavily concentrated against the new French troops that were appearing upon the lengthening line and forced them to give up Lihons and Noyon. When the German pressure was renewed in the north Albert became the obvious objective, on account of the massed attacks made upon Ablainville near by. In the battle of the Somme, Albert, as a junction and depot, performed for the British in a minor degree what Cambrai later performed for the Germans in the present battle. On March 27 the British began a retreat on a wide front on both sides of the Somme, and in the evening Albert was evacuated. The next day came the great French counterattack between Lassigny and Noyon, already mentioned in connection with the geographical development of the battle. On the 28th the German attack was renewed on the Somme, where it pressed back the British near the Chippily crossing, and before Arras, where a frontal attack was repulsed with great enemy loss. This attack was renewed for three successive days. Then on April 3 the French again won near Lassigny and repulsed heavy German attacks around Moreuil.