[1] In May 1799 he distinguished himself by saving a division of the French army which was about to be crushed by the Russians at the battle of Bassignana, and was named at once brigadier-general by Moreau.

He incurred Napoleon's displeasure for an omission of duty shortly before the battle of Marengo (June, 1800), but in 1805 was appointed to be aide-de-camp of the emperor.

The court of Tehran sent a mission to the French emperor, then at the Finckenstein Palace in East Prussia, with a view to the conclusion of a Franco-Persian alliance.

[1] France was to guarantee the integrity of Persia, to recognize that Georgia (then being invaded by the Russians) belonged to the shah, and was to make all possible efforts for restoring that territory to him.

For a time French influence completely replaced that of England at Tehran, and the mission of Sir John Malcolm to that court was not allowed to proceed.