The First Carabiniers were not present at Eylau, having been ordered late to follow the main body of the French Army, and then being ordered to hold a few miles away from the battlefield itself. The French casualties there were great, almost impossible to estimate. The regiment later marched past the frozen corpses of horses and men on the battle field. They caught up with the rest of the French Army in time to participate at Heilsberg, and later at Friedland. He was wounded by a sword blow to the head in combat at Ratisbon on 23 April 1809; subsequently, on 6 July, at the Battle of Wagram, commanding 1st Carabinier Regiment of Bessières's cavalry reserve, his horse was killed under him.