Rubuta ci gaba ga wannan sakin layi - A cikin 1801, Camille Alphonse Trezel ya shiga matsayin mai tsarawa a ofishin yaƙin kuma a cikin 1803 ya sami mukamin laftanan a cikin jikin injiniyoyin topographical. An tura shi a cikin 1804 zuwa Sojojin Holland, an ci gaba da shi a shekara mai zuwa zuwa mataimakin injiniya mai ilimin ƙasa. Bayan yakin Poland
, an nada shi mataimakin mukaddashin Janar Gardane a ofishin jakadancin Faransa a Farisa a cikin 1807-1808, sannan mataimakin Janar Armand Charles Guilleminot a lokacin dawowarsa a 1809. Ya kasance sakatare na Kwamitin kan Iyakance Illyria, an daukaka shi zuwa kyaftin (1810), kuma aka tura shi zuwa rundunar sojojin Spain. An sake dawo da shi zuwa Jamus a ƙarshen 1811, ya yi aiki a sashen binciken Hanseatic, a kan yaƙin neman zaɓe zuwa Rome, ya zama laftanan kwamandan (1813), Shugaban Ma'aikata na 13th Division, kuma ya yi aiki a kan kare Mainz.