Battle of Eylau
On 14 October 1806 while commanding the cavalry of Ney's VI Corps, Colbert served at the Battle of Jena, leading several charges of the 3rd Hussar and 10th Chasseur Regiments against enemy infantry. Still with VI Corps, he led his troopers at the Battle of Eylau on 8 February 1807 and the Battle of Friedland on 14 June. At this period Ney said of him, "I sleep peacefully when Colbert commands my outposts."