Marshal Emmanuel de Grouchy

Emmanuel de Grouchy was a career cavalry officer raised to Marshal of France by Napoleon in April 1815, his only marshalate. During the Waterloo campaign, Napoleon detached him with roughly a third of the French army on 17 June 1815 to pursue Blucher's defeated Prussians after Ligny. Grouchy pursued cautiously, fought an inconclusive separate action at Wavre on 18 June, and failed to prevent the Prussian army from marching to Wellington's relief at Waterloo -- a failure historians have debated ever since, given Grouchy was following Napoleon's own written orders rather than acting on independent initiative. He escaped to the United States after the Bourbon Restoration before returning to France in 1821.

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