Suddenly, at sunrise, a low boom was heard from this point. This was the opening German gun of the artillery preparation for the attack, which was now evidently developing, and although the distance was nearly six thousand yards, yet the bursts of the huge shells were seen to have been well timed. Another and another followed, and presently these huge projectiles, hurtling through the air and bursting with a greenish-yellow smoke, showed that they were charged with some high explosive. No sooner had this terrific tornado of destruction opened in real earnest from the enemy, than the field artillery, massed as has already been described, commenced their long-distance fire at a range of about three thousand five hundred yards, and for a period, that seemed hours, but yet was in reality only about fifty minutes, the awful cannonade continued. The British guns had already come into action, and intermittent firing of shrapnel and other projectiles was now directed against the German batteries. These latter, however, were mostly carefully concealed, effective cover having, by means of hard spade-work, been thrown up during the night. The British guns were mostly served by Volunteers and Militia-Artillerymen, who, although burning with patriotism, were--owing to the little real practice they had had in actually firing live shell, having mostly been drilled with dummy guns--utterly incompetent to make any impression upon the enemy’s lines of concealed artillery. It was plain, then, that the Germans had adopted the principle of massing the bulk of the guns of their two divisions of the VIIth Corps at such a point that they might strike the heaviest blow possible at the defence, under cover of which, when resistance had been somewhat beaten down, the infantry might advance to the attack. This was now being done. But away to the south was heard the distant roar of other artillery, no doubt that of Haesler’s Corps, which had apparently crossed the river somewhere in the neighbourhood of Renishaw, and advancing via Eckington had established themselves on the high ground, about five hundred and twenty feet in altitude, just north of Ridgeway, whence they were able to pour in an enfilading fire all along the British position from its centre at Woodhouse almost to Catcliffe itself. This rendered our position serious, and although the German guns had opposed to them the southernmost flank from Woodhouse to Norton Woodseats, yet it was plain that the main portion of the British defence was in process of being “turned.” The heavy firing continued, and at last, under cover of it, the rear attack now began some two hours after the opening of the fight.