Battle of Eylau
He was promoted to Colonel of the 1st Grenadiers of the Guard, on February 16, 1807, in recognition of his conduct at the Battle of Jena-Auerstedt where the Guard played a vital role and Battle of Eylau where they were unused. He fought at the Battle of Friedland again held in reserve, and left for Spain after the Treaty of Tilsit ended the war with Russia and Prussia, shattering the Third Coalition.