The arrival of LLOYD's British, and CLEEVES's German, Batteries, attached to ALTEN's Division, had already made a most important addition to the Duke's Artillery force; the former took post in front of Quatre Bras on the right, the latter on the left, of the Charleroi road. Almost immediately afterwards, Major KUHLMANN's Battery of Horse Artillery of the King's German Legion, belonging to the First Division, which it had preceded on the Nivelles road, reached the Field, and moved rapidly to the point of intersection of the Brussels and Nivelles road, where it came into action, at the very moment the _Cuirassiers_ who had fallen upon HALKETT's Brigade were advancing in mass along the former road towards Quatre Bras. Two guns under Lieutenant SPECKMANN were posted so as to bear directly upon the French Column, and completely to enfilade the road; and as the Cuirassiers approached with the undaunted bearing that betokened the steadiness of veterans, and with the imposing display that usually distinguishes mailed Cavalry, a remarkably well directed fire was opened upon them: in an instant the whole mass appeared in irretrievable confusion; the road was literally strewed with corses of these steel clad warriors and their gallant steeds; KELLERMANN himself was dismounted, and compelled like many of his followers to retire on foot. * * * * * It was at this moment that Colonel LAURENT, who had been despatched from the Imperial Head Quarters, reached NEY, with a pencilled note requiring the Marshal to detach the First Corps towards St Amand. Having fallen in with the head of the Column of that Corps, he had taken upon himself to alter the direction of its march; and, on coming up with Count D'ERLON, who had preceded his Corps, and was then in front of Frasne, he showed him the note, and explained to him where he would find the head of his Column. Shortly afterwards, General D'ELCAMBRE, Chief of the Staff to the First Corps, arrived to report the movement which was in course of execution. NEY now saw clearly that at the very moment he required the aid of D'ERLON's Corps, not only to counterbalance the arrival of reinforcements which had joined WELLINGTON, but to give an efficient support to the renewed general attack he had projected, that Corps had been placed beyond his reach, and that he must, in all probability, continue to fight the battle without any addition to the force he had already in the Field. Nevertheless, he did not allow the circumstance to suspend the execution of his operations; and, with the hope of yet securing the assistance of the First Corps, he sent back General D'ELCAMBRE, with a peremptory Order for its return towards Quatre Bras.