III
THE DECISIVE DAY
Friday the 16th of June
Quatre Bras and Ligny
We have seen what the 15th of June was in those four short days of which Waterloo was to be the climax. That Thursday was filled with an advance, rapid and unexpected, against the centre of the allied line, and therefore against that weak point where the two halves of the allied line joined, to wit, Charleroi and the country immediately to the north of that town and bridge.
We have further seen that while the unexpectedness of the blow was almost as thorough as Napoleon could have wished, the rapidity of its delivery, though considerable, had been less than he had anticipated. He had got by the evening of the day not much more than three-quarters of his forces across the river Sambre, and this passage, which was mapped out for completion before nightfall, straggled on through the whole morning of the morrow,—a tardiness the effects of which we shall clearly see in the next few pages.
Napoleon’s intention, once the Sambre was crossed, was to divide his army into two bodies: one, on the left, was to be entrusted to Ney; one, on the right, to Grouchy. A reserve, which the Emperor would command in person, was to consist in the main of the Imperial Guard.
The left-hand body, under Ney, was to go straight north up the great Brussels road.
Napoleon rightly estimated that he had surprised the foe, though he exaggerated the extent of that surprise. He thought it possible that this body to the left, under Ney, might push on to Brussels itself, and in any case could easily deal with the small and unprepared forces which it might meet upon the way. Its function in any case, whether resistance proved slight or formidable, was to hold the forces of Wellington back from effecting a junction with Blucher and the Prussians.