A stylist among letter-writers has described that oncoming swarm as grey clouds drifting over green fields. They had deployed under cover whilst the batteries were preparing their path, and now over an extended front to the north-west of Mons they {66} were breaking out from the woods and coming rapidly onwards. The men fidgeted with their triggers, but no order came to fire. The officers were gazing with professional interest and surprise at the German formations. Were these the tactics of the army which had claimed to be the most scientific in Europe? British observers had seen it in peace-time and had conjectured that it was a screen for some elaborate tactics held up for the day of battle. Yet here they were, advancing in what in old Soudan days used to be described as the twenty-acre formation, against the best riflemen in Europe. It was not even a shoulder to shoulder column, but a mere crowd, shredding out in the front and dense to the rear. There was nothing of the swiftly weaving lines, the rushes of alternate companies, the twinkle and flicker of a modern attack. It was mediaeval, and yet it was impressive also in its immediate display of numbers and the ponderous insistence of its onward flow. It was not many weeks before the stern lesson of war taught very different formations to those of the grand Kaiser manoeuvres. The men, still fingering their triggers, gazed expectantly at their officers, who measured intently the distance of the approaching swarms. The Germans had already begun to fire in a desultory fashion. Shrapnel was bursting thickly along the head of their columns but they were coming steadily onwards. Suddenly a rolling wave of independent firing broke out from the British position. At some portions of the line the enemy were at eight hundred, at others at one thousand yards. The men, happy in having something definite to do, snuggled down earnestly to their work and fired swiftly but deliberately into {67} the approaching mass. Rifles, machine-guns, and field-pieces were all roaring together, while the incessant crash of the shells overhead added to the infernal uproar. Men lost all sense of time as they thrust clip after clip into their rifles. The German swarms staggered on bravely under that leaden sleet. Then they halted, vacillated, and finally thinned, shredded out, and drifted backwards like a grey fog torn by a gale. The woods absorbed them once again, whilst the rain of shells upon the British trenches became thicker and more deadly.