After Napoleon's abdication, Pelet received the Order of Saint-Louis from the Bourbon Restoration and was assigned to the Royal Chasseurs. Nevertheless, he rallied to Napoleon during the Hundred Days and became commander of the 2nd Guard Foot Chasseurs, an 1,100-strong unit in Charles Antoine Morand's division. Pelet's guardsmen fought at the Battle of Ligny on 16 June 1815. At the Battle of Waterloo two days later, Pelet's regiment initially was part of the reserve, but he was later ordered to take his 1st Battalion and defend Plancenoit from the Prussians.