On the evening of October 21st the position was that the 21st Brigade at Becelaere and the 20th at Kruiseik and Zandvoorde were still very considerably ahead of the 22nd, which, as we have seen, had been driven back to Zonnebeke. North of Zonnebeke the line of the 1st Division fell still further back, facing, in fact, very nearly due north, while south of Zandvoorde there was no line at all, the 7th Division here ending in space, for reasons already given. Later on the 3rd Cavalry Division—when released from its duties north of Zonnebeke—were detailed for the duty of keeping up the communication between Zandvoorde and the Cavalry Corps far back at Hollebeke, Wytschate and Messines, but even so, the line they occupied fell back almost at right angles from our true front, and was a constant source of anxiety. For a General voluntarily to relinquish ground already won is probably the supreme act of renunciation, at the same time it is obvious that three sides of a square are longer than the fourth side, and therefore require more men for their defence, and it is no exaggeration to say that between October 20th and 26th the Ypres salient bore a perilous resemblance to three sides of a square.

The timely arrival of the 1st A.C. had undoubtedly saved the situation for the moment, as far as the German attempt to break through at Zonnebeke was concerned, but the position was still one for the very gravest anxiety. Even with the addition of the 1st A.C. we had only three infantry divisions and two cavalry brigades with which to defend the entire front from Bixschoote, due north of Ypres, to Hollebeke, nearly due south of it. From Bixschoote to Hollebeke, as the crow flies, is a matter of some eight miles, but, as our front at that time jutted out as far as Becelaere, six miles east of Ypres, it may be reckoned that the frontage to be defended was not less than sixteen miles in length. The strength of the enemy—that is to say, of the force which was immediately pressing forward at this moment on the Ypres frontage—may be approximately reckoned at 100,000; and had the German General at this juncture pushed his forces along all the main avenues to Ypres, it is difficult to see how he could have been held back. The line of defence was ridiculously extended—extended indeed far beyond the recognized limits of effective resistance, and there were no reserves available with which to strengthen any threatened spot. Every fighting man was in the long, thin line that swept round in that uncomfortable curve from Bixschoote to Hollebeke. The 89th French Territorial Division was, it is true, in general reserve, at Poperinghe, but this division was composed entirely of untried troops who could in no sense claim to be comparable to the French regulars. The 87th French Territorial Division, again, had as much as it could do to attend to its own affairs north of Ypres, and was not to be counted on as a source of reinforcement.

From this time on, the whole of our line north of the Zonnebeke road was gradually taken over by the 1st A.C., the 6th and 7th C.B., who had so far been responsible for that section of the front, being thereby released and retiring to Hooge, from which point, for the time being, they acted as a kind of mobile reserve—the fan-like arrangement of roads which branches out eastward from Ypres enabling them to be sent with the least possible delay to any threatened point on the front.

For purposes of descriptive clearness, it may perhaps be pardonable, even at the risk of labouring the point a little, to call attention once more to the fact that the British force in Flanders now consisted of two distinct and separate armies, which we may call the North and South Army. The South Army was made up of the 2nd A.C., the 3rd A.C., and the 19th Brigade, and was supported by Conneau's cavalry, which operated between these two Army Corps, and by the Lahore Indians in rear. The line of this army extended as far north as Le Gheir, or, rather, let us say, Ploegsteert, to which place the left of the 3rd A.C. shortly withdrew.

The North Army consisted of the 1st A.C. and the 7th Division, supported by the 3rd Cavalry Division, and the southernmost point in its charge at the moment was Hollebeke, or, to be more precise, the canal which turns off sharply towards Ypres just north of Hollebeke. The eight miles gap between the North Army and the South Army was held by the Cavalry Corps under Allenby.

The terrific fighting, then, of the end of October and beginning of November may be considered as taking place in three distinct sections, viz.—the South Army, the Cavalry Corps, and the North Army. The latter, it may be added, had the 89th French Territorial Division in support, and Gen. Bidon, with the 87th French Territorial Division, on its left, north of Ypres.

The fact that the 1st A.C. had arrived on the scene absolutely at the psychological moment in order to avert disaster, was made abundantly clear, not only by the effective support which the 2nd Division of that Army Corps was able to lend north of the Zonnebeke road on the 21st, but also by the immediate demand which arose further south for the services of the released 3rd Cavalry Division. These two Cavalry Brigades, it will be remembered, had been replaced on the night of the 20th by the 2nd Division, who had taken over their position north of the Zonnebeke road.

At 1 p.m. on the following day, that is, at the same time that the Welsh Fusiliers were being so fiercely attacked along the Zonnebeke road, news arrived that Gough's 2nd Cavalry Division was being very hard pressed, and had been forced to fall back on Messines. This left a gap, or—to be more accurate—widened the gap on the right of the 7th Division at Zandvoorde, and the 6th C.B. (10th Hussars, Royals, and 3rd Dragoon Guards) were sent off to fill it, as well as might be, by occupying the two canal crossings north of Hollebeke. This they did with success, and the 10th Hussars and 4th Hussars (from the 3rd C.B.) even attacked the Château de Hollebeke itself, but were unable to take it, on account of its being still under fire from our own artillery. Later on in the evening, however, it was felt that the line south-west of Zandvoorde was dangerously open, and the 6th C.B. was shifted in that direction, the 10th Hussars at 3 o'clock in the morning taking over the Zandvoorde trenches from the 2nd Scots Guards in the 20th Brigade. The 7th C.B. went into reserve at St. Eloi, where it remained for the night. In the meanwhile the C. in C. had sent up the 7th Indian Brigade to help support Gough.

This transfer of the Zandvoorde trenches into the keeping of the 3rd Cavalry Division was the first abridgement of the immense frontage (from Zonnebeke to south of Zandvoorde) held by the 7th Division. From this time on, till the moment when they were permanently abandoned, it will be found that these Zandvoorde trenches were in the occupation either of the 6th C.B. or the 7th C.B. They formed the most dangerous position in the whole line of defence, being in the form of a promontory which jutted out defiantly into the enemy's country. The 3rd Cavalry Division suffered very severely during its nine days' defence of these deadly trenches, the 10th Hussars, who were perhaps the worst sufferers, losing on the very first day of occupation Col. Barnes, Major Mitford and Captain Stewart.