The attack, which became known as the battle of Malmaison, was fought on October 23. Five companies of tanks took part in it under the orders of Colonel Wahl, who had recently been appointed to command the Artillerie d’Assaut with the Sixth Army. This command was the origin of what later became a Tank Brigade Headquarters, which corresponded with a Group Headquarters in the final organisation of the British Tank Corps.
In this battle the Schneider company operated with success, but the St. Chamond machines were a failure, only one or two reaching the plateau. On the 25th the St. Chamonds were used again.
Generally speaking, it was considered that the French heavy tanks had justified their construction, nevertheless many still doubted their utility when the victory of Cambrai, on the British front, dispelled all doubts in the French mind.
The second period now opened and defensive reconnaissances were undertaken along the French front in view of the expected German offensive.
In March 1918 all available tanks were concentrated behind the front of the Third French Army as counter-attack troops, and in this capacity took part in the following minor operations, which were chiefly undertaken to recapture features of local tactical importance: on April 5 at Sauvillers; on April 7 at Grivesnes; on April 8 at Sénécat wood, and on May 28 at Cantigny in co-operation with American troops.
Following the great blow struck at the junction of the British and French Armies in March the German General Staff decided to attack the French on May 27. It would appear that this attack was at first intended only to secure the heights south of the river Vesle, but that by the 29th, owing to its astonishing initial success, it was decided to push it forward with the ultimate intention of capturing Paris and so ending the war before America could develop her full strength. In support of this intention there is evidence that a council of war was held in the recaptured area at which the Kaiser, Crown Prince, Hindenburg and Ludendorff were present and at which it was decided to exploit the success gained to its utmost, not, however, losing sight of the original plan, which was to include the capture of Reims. This offensive may be considered to have worn itself out by June 4, on which date the Germans had developed a salient forty kilometres deep on a forty kilometres front. The old capital of France, however, remained in French hands and its occupation denied to the German forces holding the salient a most needed line of supply.
On June 9 the attack was extended, being directed against the Third French Army between Noyon and Montdidier. Behind this Army four heavy tank battalions had been assembled. The first and second lines soon fell into the enemy’s hands, and the French troops, which had been detailed for counter-attack, were rapidly absorbed in the defence. On the 10th reinforcements were hurried forward, and on the 11th General Mangin launched his tank and infantry counter-attack. This battle continued until the 13th, and in spite of the many difficulties 111 out of the 144 tanks assembled started at zero hour. Losses in machines were heavy and about 50 per cent. of their crews became casualties, but in spite of this and the fact that the tanks rapidly outdistanced the infantry, a heavy blow was inflicted on the enemy, whose offensive definitely broke down.
In the action of June 11 the Schneider and St. Chamond tanks reached the zenith of their career. From now onwards, though they continued to be fought, they gradually ceased to be used as units, becoming mixed with Renault machines until finally, in October 1918, the two remaining mixed battalions were armed with British Mark V star tanks; these two battalions, however, never took the field.
In order to stop the enemy’s onrush on May 27, two battalions of Renault tanks were hurried up by road to the north-eastern fringes of the forest of Villers-Cotterets, and on May 31 they made their debut, two companies co-operating with colonial infantry on the plateau east of Cravançon farm. From this date on to June 15, these two battalions continued to act on the defensive with tired troops; nevertheless they succeeded in preventing a further advance of the German Armies. This closes the second period.
During the first fortnight of July the 3rd and 5th Renault Battalions were moved to the battle area, the former being attached to the Fifth French Army, south of Dormans, and the latter to the Tenth. These machines came into action on the 15th, 16th, and 17th of the month.