The Second Corps followed the First, and ended its march on the southern side of Wavre, round about the village of St Anne.
The Third Corps did not complete the retreat until the end of daylight upon the 17th, and then marched through Wavre, across the river to the north, and bivouacked around La Bavette.
Finally, still later on the same evening, the Fourth Corps, that of Bulow, which had come to Ligny too late for the action, marching by the eastward lanes, through Sart and Corry, lay round Dion Le Mont.
By nightfall, therefore, on Saturday the 17th of June, we have the mass of the Prussian army safe round Wavre, and duly disposed all round that town in perfect order.
With the exception of a rearguard, which did not come up until the morning of the Sunday, all had been safely withdrawn in the twenty-four hours that followed the defeat at Ligny.
It may be asked why this great movement had been permitted to take place without molestation from the victors.
Napoleon would naturally, of course, after his defeat of the Prussians, withdraw to the west the greater part of the forces he had used against Blucher at Ligny and direct them towards the Brussels road in order to use them next against Wellington. But Napoleon had left behind him Grouchy in supreme command over a great body of troops, some 33,000 in all, whose business it was to follow up the Prussians, to find out what road they had taken; at the least to watch their movements, and at the best to cut off any isolated bodies or to give battle to any disjointed parts which the retreat might have separated from support. In general, Grouchy was to see to it that the Prussians did not return.