It was the battle of the Somme that first revealed the true formidableness of the new British armies. The opening of this terrific campaign was pitched for the fifth month of the Verdun struggle. The offensive against modern entrenchments seemed to be in eclipse. Four months' pounding by the seried masses of the German guns and carefully arranged assaults by picked troops had failed to reach the enemy objective. The deduction that seemed inevitable was that the offensive was bound to be extremely costly and productive of little. It was in this atmosphere the Somme battle opened against positions that had been elaborated by two years of care and cunning. The course of that bitterly contested campaign re-established the offensive as a paying proposition. All manner of engagements were fought out in that area. Some positions were carried at the point of the bayonet. Others were encircled so that the garrisons had to evacuate them or choose between annihilation and capture. But, by whatever means, one fell after another. The experience gained was assimilated and the armies marched from strength to strength. On at least one occasion the British were only cheated of a decisive and overwhelming victory by an unkindly fate that brought bad weather when the armies were straining to go forward. A flank was opened in the German lines and through it the German army steadily bled away until an unwonted prudence conquered Prussian pride and the great strategic retreat was carried out. By that retreat, carried out under the compulsion of the British army, the Germans admitted to the world the strategic nature of the Somme campaign success. By the retreat the Germans hoped to gain a respite. The victory of Vimy Ridge was the unwelcome reality to which that dream materialized. This position was one that was formidable from its natural conformation to begin with, and it had been turned into an obstacle which almost justified the German confidence in its impregnability. The assaulting troops had the advantage of only a limited surprise. The Ridge overlooked the British positions, and little could be done between Arras and La Bassée that was not detected by the German observers. Yet in two days the position was carried with 11,000 prisoners and 100 guns. And it was but three weeks since the enemy had carried out the retreat that was to cut the ground from under the British plans. The British losses were comparatively light; everyone could see that if the battle were to become a precedent, the decisive defeat of Germany was assured.