 Complete the following phrase:  Étienne Heudelet de Bierre 12 November 1770  20 April 1857 joined the French army as a volunteer lieutet in 1792. A year later he became a staff officer for a number of generals before becoming Laurent Gouvion Saint-Cyrs chief of staff in 1795. He fought under Jean Victor Marie Moreau in the 1796 campaign and fought at Kehl. He became a general officer in 1799, leading his troops at the 