Which French officer wrote a famous memoir of Napoleon's 1812 Russian campaign?

Philippe-Paul de Ségur wrote a famous memoir and history of Napoleon’s 1812 Russian campaign. A French general and member of Napoleon’s personal staff, Ségur accompanied the Grande Armée during its invasion of Russia and witnessed the campaign’s disastrous retreat firsthand.

His account, published in French in 1824 as Histoire de Napoléon et de la Grande Armée pendant l’année 1812, became one of the best-known narratives of the expedition. An English translation appeared soon afterward under titles such as History of the Expedition to Russia. Ségur combined military observation with dramatic storytelling, describing the advance to Moscow, the Battle of Borodino, the city’s evacuation, and the retreat through the winter landscape.

Readers should distinguish Ségur from Denis Davydov, the Russian partisan and cavalry commander, and from Carl von Clausewitz, the Prussian military theorist who also wrote about the campaign. Adolphe Thiers was a later French historian, not the officer whose firsthand memoir is being asked about.