About 7.30 a.m. General Allenby received a message from Sir Charles Fergusson, commanding 5th Division, saying that he was very hard pressed and in urgent need of support. On receipt of this message General Allenby drew in the Cavalry and endeavoured to bring direct support to the 5th Division. During the course of this operation General De Lisle, of the 2nd Cavalry Brigade, thought he saw a good opportunity to paralyse the further advance of the enemy's infantry by making a mounted attack on his flank. He formed up and advanced for this purpose, but was held up by wire about 500 yards from his objective, and the 9th Lancers and 18th Hussars suffered severely in the retirement of the Brigade. The 19th Infantry Brigade, which had been guarding the Line of Communications, was brought up by rail to Valenciennes on the 22nd and 23rd. On the morning of the 24th they were moved out to a position south of Quarouble to support the left flank of the Second Corps. With the assistance of the Cavalry Sir Horace Smith-Dorrien was enabled to effect his retreat to a new position; although, having two corps of the enemy on his front and one threatening his flank, he suffered great losses in doing so. At nightfall the position was occupied by the Second Corps to the west of Bavai, the First Corps to the right. The right was protected by the Fortress of Maubeuge, the left by the 19th Brigade in position between Jenlain and Bry, and the Cavalry on the outer flank. Tuesday, August 25 4. The French were still retiring, and I had no support except such as was afforded by the Fortress of Maubeuge; and the determined attempts of the enemy to get round my left flank assured me that it was his intention to hem me against that place and surround me. I felt that not a moment must be lost in retiring to another position. I had every reason to believe that the enemy's forces were somewhat exhausted, and I knew that they had suffered heavy losses. I hoped, therefore, that his pursuit would not be too vigorous to prevent me effecting my object. The operation, however, was full of danger and difficulty, not only owing to the very superior force in my front, but also to the exhaustion of the troops. The retirement was recommenced in the early morning of the 25th to a position in the neighbourhood of Le Cateau, and rearguards were ordered to be clear of the Maubeuge--Bavai--Eth road by 5.30 a.m. Two Cavalry Brigades, with the Divisional Cavalry of the Second Corps, covered the movement of the Second Corps. The remainder of the Cavalry Division with the 19th Brigade, the whole under the command of General Allenby, covered the west flank. The 4th Division commenced its detrainment at Le Cateau on Sunday, the 23rd, and by the morning of the 25th eleven battalions and a Brigade of Artillery with Divisional Staff were available for service.