With regard to the infantry itself, the most interesting feature of the Battle of Messines was the triumph of the platoon. Each platoon had now a Lewis-gun section and a section of rifle grenadiers. It was converted thereby into a little self-sufficing force, an army in miniature, with every weapon necessary for the carrying out of the minor operations likely to confront it in such an assault. Some of the platoon leaders displayed in this battle a high order of tactical skill.
But let us glance also at the affair from the other side, where a German Army Commander, the famous Sixt von Armin, was seated at his map-table. What were the problems that confronted him, and how did he face them?
The Germans meant to hold the ridge if they could. It was a valuable position that had cost them dear in the winning. They knew an attack was coming, but they put it one or two days later than it was delivered. The Higher Command was well aware that the troops in the trenches were in no fit state to meet it, after days of terrific pounding, heavy losses, and shortage of food. It was in the act of relieving them when the attack was launched. The relief of one Division was incomplete when the mines went up and the British bayonets came in the dark upon the columns in the communication trenches. The confusion must have been indescribable. Again, the German position, admirable for trench warfare, had weaknesses in such a battle as this. It was a sharp salient, with a semi-circle of artillery about it. The artillery had excellent observation. Had the weather been misty, Kemmel would have been of little avail, and the work of destruction comparatively ineffective. But the atmosphere was wonderfully clear. The British fire upon the forts was overwhelming. The counter-battery work was the best accomplished in the war. An average of one gun to every German battery in action was destroyed by our fire, according to the evidence of captured artillerymen. The loss in horses alone constituted a severe blow. As to the counter-attack, which was made in the afternoon with the 7th and probably regiments of the 24th Divisions, it was launched late, and met the full weight of our barrage. With its failure the High Command appears to have decided, wisely no doubt, to abandon the struggle, and made all haste to get every gun left to it east of the Canal d'Ypres. It must have appeared to it that the position held by the British offered doubtful results to a counter-attack in force. The latter had now all the best of the ground, and a great counter-attack upon the re-entrant held by them would have required more troops than the enemy probably had available.
On the 13th of July the 36th Division, less its Artillery, which remained in position, moved to the area between Mont Noir and Bailleul. A certain amount of rest was obtained, but large parties of infantry had to work under the Chief Engineer of the IX. Corps. However, better things were in prospect, the Division being under orders to move back to Merris. These orders were suddenly cancelled. On the night of the 19th, the 107th Brigade on the right, and the 109th on the left, took over from the 11th Division the whole front now held by the IX. Corps, from the Blauwepoortbeek at Deconinck Farm, just north of the village of Gapaard, on the right, to Rose Wood, north of the Roozebeek, on the left. The length of the front was about three thousand yards. The Headquarters of the 107th Brigade were established in a company headquarters of our old trenches, those of the 109th Brigade in enemy dug-outs in the northern part of Grand Bois. On the 20th, 36th Divisional Headquarters opened at Ulster Camp.
The holding of a new-won position after a great attack was always an unpleasant task. In this case the conditions were, from some points of view, more difficult than those of the capture of the ridge. "Jerry was angry," said the men, with justice. The Germans now had a mass of heavy artillery behind the Canal d'Ypres, and day and night they shelled the British forward positions and the western slope of the ridge. On their second day in the line the Headquarters of the 109th Brigade in the Grand Bois were so heavily bombarded that General Nugent decided they should be withdrawn to a company headquarters in our old lines. The troops in the front trenches were on a forward slope, very exposed to observation, and suffered heavily. At night ration parties on the roads had many evil experiences. Casualties rarely amounted to less than a hundred for the period of twenty-four hours, and several battalions had considerably greater losses in ten days of this experience than in the period from the 7th to the 9th of June.
Nor was it alone upon areas over which he had observation from the ground that the enemy was able to bring to bear accurate fire. Parties on railway work, lorries on the Wytschaete Road, suffered very heavily also. The reason was that the situation in the air had altered. British supremacy there had been absolute. Not a German aeroplane had been seen during the battle. Since then certain of our squadrons had moved north to the Salient. The German air force, on the contrary, had been heavily reinforced. In particular the famous Richthofen, with a squadron of very fast single-seater scouts, painted bright red, raged up and down the front, catching many of our comparatively slow photographic and artillery aeroplanes, and shooting them down. Another favourite device of his was to sweep low over our trenches, firing belt after belt upon the infantry in them, who retorted, without much effect, by the fire of machine-guns on anti-aircraft mountings. But his most spectacular feat was undoubtedly the burning of our balloons. Of these there was a great number on the front. From Kemmel about fourteen could be counted, stretching almost to the coast on one side, and perhaps to Estaires on the other. For men in the neighbourhood of the hill it became one of the interests of those sunny afternoons to watch the balloons. The programme was always of a similar nature. There would be a sudden uproar of anti-aircraft fire, a fast-moving dot would approach one of the balloons, two silver dots below the latter would represent the observers making their way earthwards in their parachutes. A tiny flicker of fire would appear atop of the balloon, swiftly growing and spreading. Within a few seconds the flaming mass would sink slowly. Sometimes the aggressor would dart straight off to the next balloon in the line, and repeat the process with that. On the afternoon of June the 23rd, three balloons in succession were brought down by one aeroplane. It must, however, have been displeasing to the Germans to observe how swiftly every balloon burnt by them was replaced.
The German infantry, it must be added, was entirely unaggressive, nor was it easy to locate its positions. It held the ground west of the Canal d'Ypres with isolated posts, and made no effort to improve the half-dug trenches already existing. All labour was concentrated upon the positions east of the Canal.
On the 29th a welcome relief of the 36th by the 37th Division took place. On the following day the G.O.C. 37th Division took over command of the front, the whole of the 36th Division, less Artillery, Engineers, and Pioneers, moving to the Merris area. The Headquarters of the Division and that of the 108th Brigade were in that village; the 107th Brigade at Outtersteene, and the 109th at Strazeele. The batteries, which had withdrawn to their forward wagon-lines for rest on the 19th, had returned to the line by the 27th in relief of the 11th Divisional Artillery, and remained there till July the 5th, under heavy hostile shelling, in indifferent weather with poor visibility. The Pioneers and Field Companies had but a day's rest before being moved to the Salient to begin new work.