At the outbreak of the French Revolution, he had just finished his studies at the Prytanée National Militaire, and he entered the army as a volunteer. During the expedition to Egypt, Napoleon named him colonel (1798), then brigadier-general, and after the Battle of Austerlitz his aide-de-camp. His life was henceforth closely bound up with that of Napoleon, who had the fullest confidence in him, honoring him in 1808 with the title of count and at the end of 1813, with the title of Grand Marshal of the Palace. It was Bertrand who in 1809 directed the building of the bridges by which the French army crossed the Danube at Wagram. In 1811, the Emperor appointed Bertrand governor of the Illyrian Provinces and during the German campaign of 1813, he commanded IV Corps which he led in the battles o