The more one considers the operation of the crossing of the Aisne with the battle which followed it, the more one is impressed by the extraordinary difficulty of the task, the swift debonair way in which it was tackled, and the pushful audacity of the various commanders in gaining a foothold upon the farther side. Consider that upon the 12th the Army was faced by a deep, broad, unfordable river with only one practicable bridge in the fifteen miles opposite them. They had a formidable enemy armed with powerful artillery standing on the defensive upon a line of uplands commanding every crossing and approach, whilst the valley was so broad that ordinary guns upon the corresponding uplands could have no effect, and good positions lower down were hard to find. There was the problem. And yet upon the 14th the bulk of the Army was across and had established itself in positions from which it could never afterwards be driven. All arms must have worked well to bring about such a result, but what can be said of the Royal Engineers, who built under heavy fire in that brief space nine bridges, some of them capable of taking heavy traffic, while they restored five of the bridges which the enemy had destroyed! September 13, 1914, should be recorded in their annals as a marvellous example of personal self-sacrifice and technical proficiency. ------------------------------------------------------------------- {165} [Illustration: British Advance at the Aisne] ------------------------------------------------------------------- Sir John French, acting with great swiftness and decision, did not lose an hour after he had established himself in force upon the northern bank of the river in pushing his men ahead and finding out what was in front of him. The weather was still very wet, {166} and heavy mists drew a veil over the German dispositions, but the advance went forward. The British right wing, consisting of the First Division of the First Corps, had established itself most securely, as was natural, since it was the one corps which had found an unbroken bridge in front of it. The First Division had pushed forward as far as Moulins and Vendresse, which lie about two miles north of the river. Now, in the early hours of the 14th, the whole of the Second Division got over. The immediate narrative, therefore, is concerned with the doings of the two divisions of the First Corps, upon which fell the first and chief strain of the very important and dangerous advance upon that date.