In 1808, Reille partook in the campaign in Spain, the next year he participated in the battles of Aspern and Wagram. After Wagram, he was sent back to Spain, where until 1812 he commanded in Navarre and Aragon. By 1813 he was given command of the Army of Portugal which he commanded in the Battle of Vitoria but was defeated.
After the fall of Napoléon in 1814, the Bourbons made Reille inspector-general of the 14th and 15th Infantry Divisions. During the Hundred Days, he rallied to Napoléon and was given command of II Corps, which he led in the battles of Quatre Bras and Waterloo.
In 1819, he was made a Peer, in 1847 he was made a Marshal of France and in 1852 he was made a Senator. Reille died in 1860 in Paris and was buried at Père Lachaise Cemetery, in the same tomb as his father-in-law Masséna.[1] A street is named after him near the Parc Montsouris in the 14th arrondissement of Paris.
His son, René Reille (1835–1898), was a soldier, industrialist and politician who served for many years in the national Chamber of Deputies.[2]