Rubuta ci gaba ga wannan sakin layi - A shekara ta IV, a matsayin colonel, ya yi yaƙi da Janar Bonaparte a cikin 1796-97. Ya yi yaƙi a yaƙin Arcole
a Italiya a karkashin Napoleon, kuma ya shiga cikin Siege na Kehl. Chambarlhac daga baya ya koma Italiya a 1799 kuma ya yi yaƙi a yakin Verona, yana aiki tare da Schérer.