Wellington to Earl Bathurst, June 25th, 1815. The Earl of Ellesmere, who wrote under the Duke's influence, stated that not more than 7,000 of the British troops had seen a shot fired. This is incorrect. Picton's division, still 5,000 strong, was almost wholly composed of tried troops; and Lambert's brigade counted 2,200 veterans; many of the Guards had seen fire, and the 52nd was a seasoned regiment. Tomkinson (p. 296) reckons all the 5,220 British and 1,730 King's German troopers as "efficient," and Wellington himself, so Mercer affirms, told Blücher he had 6,000 of the finest cavalry in the world.
"A British Rifleman," p. 367.
I distrust the story told by Zenowicz, and given by Thiers, that Napoleon at 10 a.m. was awaiting Grouchy with impatience; also Marbot's letter referred to in his "Memoirs," ad fin., in which he says the Emperor bade him push on boldly towards Wavre, as the troops near St. Lambert "could be nothing else than the corps of Grouchy." Grouchy's despatch and the official reply show that Napoleon knew Grouchy to be somewhere between Gembloux and Wavre. Besides, Bülow's report (Ollech, p. 192) states that, while at St. Lambert, he sent out two strong patrols to the S.W., and was not observed by the French, "who appeared to have no idea of our existence." This completely disposes of Marbot's story.