Amey was put in command of the Ardennes department in the 2nd Military Division until 1806. At the beginning of the War of the Fourth Coalition in September 1806, he was put in command of an infantry brigade in Étienne Heudelet de Bierre's 2nd Division in Marshal Pierre Augereau's VII Corps. The brigade consisted of three battalions of the 7th Light Infantry Regiment. The 7th Light was engaged at the Battle of Jena on 14 October 1806. He fought at the Battle of Golymin on 26 December 1806 and the Battle of Eylau on 7–8 February 1807 where he was wounded. At Eylau, the VII Corps suffered such heavy losses that it was dissolved and its survivors distributed to other corps. Amey became governor of Elbing and later took command of a brigade in Claude Carra Saint-Cyr's division of Marshal Jean-de-Dieu Soult's IV Corps.