We have further seen that during the morning of Sunday the 18th of June he was taking no dispositions for a rapid pursuit, but, being now convinced that the Prussians merely intended a general retreat upon Brussels, proposed to follow them in order to watch that retreat, and, if possible, to shepherd them eastwards. He wrote, as we have just said, to the Emperor in the course of that morning of the Sunday, announcing that he meant to mass his troops at Wavre by nightfall, and asking for orders for the next day.
What the Prussians were doing during that Sunday morning when Grouchy was so quietly and soberly taking for granted that they could not or would not rejoin Wellington, and was so quietly shielding his own responsibility behind the Emperor’s orders, we shall see when we come to talk of the action itself—the battle of Waterloo.
Meanwhile we must return to the second half of the great strategic move, and watch the retreat of the Duke of Wellington during that same Saturday, and the stand which he made on the ridge called “the Mont St Jean” by the nightfall of that day, in order to accept battle on the Sunday morning.
An observer watching the whole business of that Saturday from some height in the air above the valley of the Sambre, and looking northwards, would have seen on the landscape below, to his right, the Prussians streaming in great parallel columns upon Wavre from the battlefield of Ligny. He would have seen, scattered upon the roads, small groups of mounted men, here in touch with the last files of a Prussian column, there lost and wandering forward into empty spaces where no soldiers were. These were the cavalry scouts of Grouchy. South of these, and far behind the Prussian rear, separated from them by a gap of ten miles, a dense body of infantry, drawn up in heavy columns of route, was the corps commanded by Grouchy.
What would such an observer have seen upon the landscape below and before him to his left? He would have seen an interminable line of men streaming northward also, all afternoon, up the Brussels road from Quatre Bras; and behind them, treading upon their heels, another column, miles in length, pressing the pursuit. The retreating column, as it hurried off, he would see screened on its rear by a mass of cavalry, that from time to time charged and checked the pursuers, and sometimes put guns in line to hold them back. The pursuers, after each such check, would still press on. The first, the thousands in retreat, were Wellington’s command retiring from Quatre Bras; the second, the pursuers, were a body some 74,000 strong formed by the junction of Ney and Napoleon, and pressing forward to bring Wellington to battle.
At Quatre Bras, Wellington had not been able, as he had hoped, to join the Prussians and save them from defeat. The French, under Ney, had held him up. He would even have suffered a reverse had Ney attacked promptly and strongly earlier in the day of Friday the 16th, but Ney had not acted promptly and strongly.
All day long reinforcements had come in one after the other, much later than the Duke intended, but in a sufficient measure to meet the tardy and too cautious development of Ney’s attack. Finally, the real peril under which the Duke lay (though he did not know it)—the junction of Erlon and his forces with Ney—had not taken place until darkness fell, and Erlon’s 20,000 had been wasted in the futile fashion which has been described and analysed.
The upshot, therefore, of the whole business at Quatre Bras was, that during the night between Friday and Saturday the 16th and the 17th the English and the French lay upon their positions, neither seriously incommoding the other.
During that night further reinforcements reached Wellington where his troops had bivouacked upon the positions they had held so well. Lord Uxbridge, in command of the British cavalry, and Ompteda’s brigade both came up with the morning, as did also Clinton’s division and Colville’s division, and so did the reserve artillery.