In the Battle of Jena-Auerstadt, Baston de Lariboisière successfully repelled several infantry charges with artillery fire. Subsequently, Napoleon raised him to major general, and appointed him to command the artillery of the Imperial Guard at Battle of Eylau, in February 1807. Baston de Lariboisière remained throughout the day-long battle with a battery of 40 guns at the French center. After the campaigns of 1806, Baston de Lariboisière briefly served as governor of Hanover. He later replaced General Nicolas-Marie Songis des Courbons prior to the engagements in northeastern Prussia in 1807. At the Battle of Danzig, although wounded by a sniper's bullet, he continued to direct the siege of the city. He directed the Imperial guard artillery for the battles of Heilsberg and Friedland; after Friedland, Baston de Lariboisière organized the security of the raft on the Niemen river, where Napoleon and Alexander II of Russia conferred on the terms of the Peace of Tilsit.