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The Battle of Picardy: Somme

Necessary to advance north of the Somme.

The defenses of the British northern wing.

The fight for Vimy and Notre Dame de Lorette.

In order that the German army might continue its march to the sea then, it was necessary that the line north of the Somme should advance, synchronizing its movement with the point of the wedge along the river. Thus only would the wedge be sufficiently wide to avoid disaster. But the entire northern wing of the British army was guarded by Vimy Ridge and the heights of Notre Dame de Lorette. It was impossible that the advance could be made, leaving these positions directly on the flank. The combination of these two heights forms a huge semicircle concave toward the south. The British batteries posted on these heights could continue to rake the German advancing troops in flank and rear with most destructive effect. Therefore, after the fighting in the south came to a halt, the Germans undertook to open the way by forcing these two positions. Using seven divisions--about 90,000 men--the Germans attacked on a front not exceeding ten miles from Arleux to Fampoux on the Scarpe. The attack continued for two days, but was an absolute failure. The German advance had to be made down the slopes of one hill, across a stretch of flat, open valley, and up the sides of another. Down in the valley were the British outpost positions which were overwhelmed and driven in. But in attempting to cross the valley floor the Germans literally withered under machine gun and rifle fire. At the end of two days' fighting, during which the greater part of these divisions were cut to pieces, the attack had to be abandoned. The fighting then from Lens southward to the Avre came to an end with the Germans completely halted. The first definite stage of the decisive battle of the war was thus concluded.