Yet the operation hardly equalled in positive achievement its spectacular advertisement. Months, if not years, of meticulous preparation in a sector that had not been seriously disturbed by fighting since 1915 had produced an advance of from two to three miles on a front of less than ten. It was a tactical victory of the most limited character; and the strategical value of the ridge was greatly exaggerated. It had never enabled the Germans to master the Ypres salient, and as the autumn showed, its conquest made no serious gap in the strength of the German defences. Neither on the Belgian coast nor on the Lys which protected Lille did the German line budge one inch in three months' strenuous fighting; and the salient created by that campaign between the coast and the Lys melted like wax in the furnace of the German offensive ten months later. Plumer's success might, however, have led to better things but for the untoward circumstances which hampered the Flanders campaign from the start. One of these was its initial delay; seven weeks elapsed before the conquest of the ridge was followed up, and the causes are still obscure. Probably they were political. Belgium, notwithstanding her passion for liberation, cannot have desired the rest of her soil to be restored in the condition of the Wytschaete ridge--a horror of desolation unfit for man or even for nature's growths; and there seemed little prospect of driving the Germans out except by a succession of ruinous tactical victories. Germany, moreover, was playing up to the Stockholm Conference and suggesting restoration without the accompaniment of ruin; and it was clear that if the Entente was to liberate Belgium, it must be done by other methods and at a lesser cost than the total destruction of her soil.

Preparations for other than limited tactical gains were made during June and July. The Third Army under Byng, who had succeeded Allenby, was put in charge of the whole British line from Arras southwards, and Rawlinson's Fourth and Gough's Fifth Armies were brought up to the coast and Ypres respectively, while a French army under Anthoine was located between Gough's and the Belgians on the Yser. The Germans were alarmed by Rawlinson's appearance on the coast, and anticipated a possible attack in that sector by delivering a defensive blow on 10 July against the bridgehead we held north-east of the Yser between Nieuport and the coast. We were apparently not prepared: two battalions were wiped out, part of the bridgehead was lost, and Rawlinson's Fourth Army remained a more or less passive spectator of the subsequent campaign. Its own chance of making a thrust had gone, and it waited in vain for the thrust elsewhere to turn the gate the Germans had barred between the Yser floods and the sea.

This reverse did not tend to expedite the campaign, and when it was finally launched on 31 July the weather interposed a third and fatal impediment. The first attack was successful enough. The French under Anthoine took Het Saas, Steenstrat, and Bixschoote; on their right Gough's Fifth seized Pilckem, St. Julien, Frezenberg, Verlorenhoek, Westhoek, and Hooge, the banks of the Steenbeck and the woods on the Menin road; and below that blood-stained highway Plumer's Second took Klein Zillebeke, Hollebeke, and Basse Ville on the Lys. It was, however, Von Arnim's plan to hold his front lines lightly and rely upon counter-attacks, and before the end of the day we had lost St. Julien, the north-east bank of the Steenbeck, and Westhoek. The key of the German position on the Menin road also remained in Von Arnim's hands, and no means had been found of dealing with his new and effective "pill-boxes." These were concrete huts with walls three feet thick, so sunk in the ground that their existence, or at least their importance, had escaped observation. They were too solid for Tanks to charge or for field guns to batter, and too small for accurate shelling by heavy artillery. Yet, crammed with machine guns and skilfully cheloned in the fighting zone, they presented a fatal bar to the rapid advance on which the success of our plan of campaign depended. Even so, it was not Von Arnim's skill and resource that finally ruined our prospects. Before night fell on the 31st the rain descended in torrents. For four days it continued, and even when it ceased it was followed by darkness worthier of November than of August. The field of battle was turned into a maze of lakes and bogs with endless shell-holes filled and hidden by the muddy water. The bombardment had broken the banks and dammed the streams, and rivers, instead of flowing, overflowed. Tanks became useless, and for men and animals there was as much risk of being drowned as shot.

The Germans were not immune from the weather; their counter-attacks were impeded, and their low-lying pillboxes were often traps for death by drowning. But enforced stagnation inevitably helps the defence, especially when time is the essence of success for the attack. Troops were pouring back from the Russian front; winter was coming to postpone until the spring any hopes of a drier soil, and the land lay low in Belgium all the way beyond the puny ridge of Passchendaele. It would have been wiser to accept the facts of the situation; but bull-dog tenacity has its defects, and that national totem is more remarkable for its persistence than for its discernment. On 3 August we regained St. Julien, on the 10th Westhoek, and on the 16th resumed the general movement. It made little appreciable progress on the right or in the centre, but on the left the French advanced from the Yser canal towards the Martjevaart, and our men took Wijdendrift and Langemarck. For the rest of the month it rained, and it was not till 20 September that the conditions were considered good enough for an attempt on the limited objectives to which our ambition was now reduced. It achieved better success than on 16 August, and the advance made along both sides of the Menin road was through difficult woods; but it nowhere exceeded a mile, the fighting was fearfully costly, and Veldhoek and Zevencote were the only two hamlets gained. On the 26th Haig struck again with similar results: Zonnebeke was captured, the woods cleared up to the outskirts of Reutel, and another advance made on the Menin road.

Fierce German counter-attacks were repulsed during the next few days, and on 4 October our offensive was resumed. Once more the weather played us false, but without the usual effect, and substantial progress was made all along the front. Part of Poelcapelle was taken, Grafenstafel fell into our hands, at Broodeseinde the Australians got a footing on the Passchendaele ridge, Reutel was captured, and Polderhoek chteau, the hinge of the German position, was stormed--only to be lost and retaken more than once before it was finally left in German possession. The next attack was designed to broaden our salient to the north between the Yser and the Houthulst Forest. It was fixed for 9 October, and rain fell as usual on the 7th and 8th. But once more it failed to stop our advance. The French and the British left between them captured St. Janshoek, Mangelaare, Veldhoek, Koekuit, and the remains ol Poelcapelle, and the Canadians made a further advance on the Passchendaele ridge by way of Nieuemolen and Keerselaarhoek. Another attack on 12 October was countermanded because of the rain, but the painful progress was resumed on 22-26 October. On the 27th the Belgians and French pushed on as far as the Blankaart Lake and the Houthulst Forest, taking Luyghem, Merckem, Kippe, and Aschoop, and on the 30th the Canadians forced their way into the outskirts of Passchendaele. Its capture was completed on 6 November and supplemented in the following days by an advance a few hundred yards along the road towards Staden.

At last the agony came to an end. The campaign was a monument of endurance on the part of the troops engaged, and of obstinacy on the part of their commanders. The misrepresentation of the results achieved in the published communiqus provoked remonstrances from officers in the field, and apparent indifference to the losses involved roused the anger of the Australians--and other troops--against their generals. Among his own men Sir Hubert Gough lost more repute in the Flanders campaign than he did in his later retreat from St. Quentin. It was the costliest of all British advances, and cut the sorriest figure in respect of its strategical results. We had advanced somewhat less than five miles in over three months, and had gained a ridge about fifty feet higher than our original line at Ypres. The strategical gains were negligible, and as an incident in the war of attrition, the campaign cost us far more than it did the Germans. They could hardly have desired a better prelude to their coming offensive on the West than this wastage of first-class British troops. Aided by the weather, Von Arnim had succeeded in his design of yielding the minimum of ground for the maximum of British losses, and the Flanders campaign was to us what Verdun had been to the Germans.

There was a more satisfactory proportion of gains to losses in the more limited operations which characterized Ptain's substitution for Nivelle as French commander-in-chief. After Nivelle's comprehensive disappointment on the Chemin des Dames and Moronvillers heights in April, Ptain restricted the field of his attacks and took ample time to prepare them. It was not until August that the first was launched, and for a sphere of action Ptain reverted once more to Verdun. The victories of October and December 1916 were commonly represented as having recovered all that the Germans had won in the spring of that year; in fact they were confined to the right bank of the Meuse. No attempt had been made to wrest from the enemy his gains to the left of the river; and his line ran in August 1917 precisely where it had run twelve months before, a German gain at the Col de Pommerieux on 28 June having been recovered by the French on 17 July. Ptain was, however, a past-master in the art of limited offensives; his aims were less ambitious than those which Nivelle or even Haig had set before themselves, but he achieved them with scientific precision and without the devastating losses which had attended the larger and less successful projects. The terrain he selected was less affected by the vagaries of the weather, and either he was better served by his meteorological experts or was singularly favoured by fortune. His main object was not the tactical gains he secured, but the restoration of the confidence of French soldiers in their offensive capacity which had been severely shaken in April. During June and July they had been mainly engaged in repelling German attacks on the Chemin des Dames, though Gouraud, who succeeded Anthoine in the Champagne command, secured some valuable local gains on the Moronvillers heights.

The attack at Verdun was entrusted to Guillaumat, and his bombardment began on 17 August. The Germans anticipated an offensive on the left bank of the Meuse, but not the extension which Guillaumat had planned on the right bank as well. The weather was as fair at Verdun as it was foul in Flanders, and while Haig's men floundered in seas of mud, the worst against which Ptain's had to contend was clouds of dust. Their artillery had destroyed the German defences on Mort Homme, and when the infantry advanced on the 20th they carried it, the Avocourt wood, the Bois de Cumires, and the Bois des Corbeaux, in a few hours with little loss. Simultaneously on the right bank of the river they captured Talou Hill, Champneuville, Mormont farm, and part of the Bois des Fosses. On the following day the Cote de l'Oie and Regnville fell on the left bank, and Samogneux on the right. On the 24th the French took Camard wood and Hill 304 and advanced to the south bank of the Forges brook, which remained their line until the American attack in October 1918, while further progress was made east of the Meuse on the 25th until the outskirts of Beaumont were reached. A fortnight later another slight advance was made between Beaumont and Ornes, and on both banks of the Meuse the line was at length restored to almost its position before the great German offensive of 21 February 1916. But Brabant-sur-Meuse, Haumont, Beaumont, and Ornes remained in German hands, and no attempt had been made to recover the line the French had then held on the road to tain (see Map, p. 194). Verdun might now have been thought quite secure but for the fact that equal success on the Chemin des Dames in October did not save it from the Germans seven months later.

This second of Ptain's limited offensives was carried out by Maistre and led to a more extended German retirement. But the attack was only on a four miles' front eastward from Laffaux in the angle made by the German retreat in the spring between the Forest of St. Gobain and the Chemin des Dames (see Map, p. 67). It was preceded by a week's intense bombardment which, as at Verdun, destroyed the German defences; and although it was made in fog and rain the high ground did not suffer like Flanders from the effects, and the French attack was immediately and completely successful. Allemant, Vaudesson, Malmaison, and Chavignon, with 8000 prisoners, were taken on 23 October, and by the 27th the French had captured Pinon, Pargny, and Filain, and pressed through the Pinon forest to the banks of the Ailette and the Oise and Aisne canal. This advance turned the line which the Germans still held on the Chemin des Dames, and they found it untenable. On 2 November they withdrew down the slopes to the north bank of the Ailette, and the French occupied without resistance Courteon, Cerny, Allies, and Chevreux, which they had vainly with thousands of casualties endeavoured to seize in April and May. The Chemin des Dames was now really won, and the contrast was pointed between the two methods and their success. Ptain's more limited offensive secured the greater strategical gains. But the French rather forgot the ease with which they finally won the Chemin des Dames in the losses their earlier efforts had cost them, and were to lose it once more because they thought it impregnable.