Upon these chief elements Joffre constructed his new plan of campaign. It was first mooted, a few hours after the issue of the order for the general retreat, in the tactical “Note for All the Armies” of August 24, and in the strategical “General Instruction” of August 25. General Headquarters were then housed in the old College, in the small country town of Vitry-le-François. Here, far behind the French centre, undisturbed by the turmoil of the front and the capital, the Commander-in-Chief, aided by such men as General Belin (a great organiser particularly of railway services), General Berthelot and Colonel Pont, grappled with the dire problem and, in the shadow of defeat, imperturbably drafted the design of the ultimate victory.
The tactical note gathered such of the more urgent lessons of the preceding actions as were capable of immediate application: the importance of close co-operation of infantry and artillery in attack; of artillery preparation of the assault, destruction of enemy machine-guns, immediate entrenchment of a position won, organisation for prolonged resistance, as contrasted with “the enthusiastic offensive”; extended formation in assault; the German method of cavalry patrols immediately supported by infantry, and the need of care not to exhaust the horses. “When a position has been won, the troops should organise it immediately, entrench themselves, and bring up artillery to prevent any new attack by the enemy. The infantry seem to ignore the necessity of organising for a prolonged combat. Throwing forthwith into line numerous and dense units, they expose them immediately to the fire of the enemy, which decimates them, stops short their offensive, and often leaves them at the mercy of a counter-attack.” The Generalissimo offered his lieutenants no rhetorical comfort, but the purge of simple truth. He knew, and insisted on their understanding, that the shrewdest of strategy was useless if faults such as these were to remain uncorrected.
The “General Instruction No. 2,” issued to the Army Commanders at 10 p.m. on August 25, consisted of twelve articles, which—omitting for the moment the detailed dispositions—contain the following orders:
“1. The projected offensive manœuvre being impossible of execution, the ulterior operations will be regulated with a view to the reconstitution on our left, by the junction of the 4th and 5th Armies, the British Army, and new forces drawn from the region of the east, of a mass capable of resuming the offensive, while the other armies contain for the necessary time the efforts of the enemy.
“2. In its retirement, each of the 3rd, 4th, and 5th Armies will take account of the movements of the neighbouring armies, with which it must keep in touch. The movement will be covered by rearguards left in favourable irregularities of the ground, so as to utilise all the obstacles to stop, or at least delay, the march of the enemy by short and violent counter-attacks, of which the artillery will contribute the chief element.
“6. In advance of Amiens, a new group of forces, constituted by elements brought up by railway (7th Corps, four divisions of reserve, and perhaps another active army corps), will be gathered from August 27 to September 2. It will be ready to pass to the offensive in the general direction St. Pol–Arras, or Arras–Bapaume.
“8. The 5th Army will have the main body of its forces in the region of Vermand–St. Quentin–Moy, in order to debouch in the general direction of Bohain, its right holding the line La Fère–Laon–Craonne–St. Erme.
“11. All the positions indicated must be organised with the greatest care, so as to make it possible to offer the maximum of resistance to the enemy.
“12. The 1st and 2nd Armies will continue to hold the enemy forces which are opposed to them.”
Articles 3, 4, and 5 specified the lines of retreat and zones of action of each of the Western forces. Articles 7, 9, and 10, like articles 6 and 8 quoted above, indicate the positions from which the projected offensive movement was to be made. The whole disposition may be summarised as follows:—On the extreme left, from the coast to near Amiens, the northern Territorial Divisions were to hold the line of the Somme, with the Cavalry Corps in advance, and the 61st and 62nd Reserve Divisions in support. Next eastward, either north or south of the Somme, was to come the new, or 6th Army, which was to strike north or north-east, on one side or the other of Arras, according to circumstances. Beside it, the British Army, from behind the Somme between Bray and Ham, would advance to the north or north-east. The 5th Army (article 8 above) had an exceedingly strong position and rôle. With the Oise valley before it, and the St. Gobain and Laon hills behind, it was to attack due northward between St. Quentin and Guise. The 4th Army was to reach across Champagne from Craonne to the Argonne either by the Aisne valley or by Rheims; while the 3rd hung around Verdun, touching the Argonne either at Grandpré or Ste. Menehould.