Emmanuel de Grouchy

Definition and stakes

comte de Emmanuel-Auguste-Dieudonné Las Cases Memoirs of the life, exile, and conversations of the Emperor Napoleon…

If Marshal Grouchy had encamped in front of Wavres in the night between the 17th and 18th, no detachment could have been sent by the Prussians to save the English army, which must have been completely beaten by the 69,000 French opposed to it.
“3dly.—The position of Mont St. Jean was ill chosen. The first requisite of a field of battle is to be without defiles in its rear. The English General derived no advantage, during the battle, from his numerous cavalry; he did not think that he ought to be and would be attacked on the left; he believed that the attack would be made on his right.
Source: Gutenberg

comte de Emmanuel-Auguste-Dieudonné Las Cases Memoirs of the life, exile, and conversations of the Emperor Napoleon…

The 34,000 men under the command of Marshal Grouchy, with 108 pieces of cannon, were sufficient to drive the Prussian rear-guard from any position it might take up, to press upon the retreat of the conquered army, and to keep it in check. It was a glorious result of the victory of Ligny, to be thus enabled to oppose 34,000 men to an army which had consisted of 120,000. The 69,000 men, under the Emperor’s 186command, were sufficient to beat the Anglo-Dutch army, composed of 90,000.
Source: Gutenberg

Marshal Emmanuel de Grouchy, comte de Grouchy Grouchy's report to Napoleon evening of 17 June (1815)

Sire, — I have the honour to report to you that I occupy Gembloux, and that my cavalry is at Sauvenières. The Enemy, about thirty thousand men strong, continues his movement of retreat. We have seized here of his, a pen of 400 horned cattle, magazines and baggage.
It would appear according to all the reports, that, on arrival at Sauvenières, the Prussians divided themselves into two columns: one of which took the road to Wavre, passing by Sart-lez-Walhain
Source: Wikisource

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