Rubuta ci gaba don wannan sakin layi - An haife shi a ranar 8 ga Nuwamba 1754 ga iyaye Balthazar D'Allemagne (1710 <unk> 1772) da Marie Lasalle (1731 <unk> 1799), Claude D'Allemagne ya girma a Peyrieu, Ain, Faransa. Shekara guda bayan mutuwar mahaifinsa, ya shiga cikin Rundunar Hainaut, yana ɗaukar Dallemagne a matsayin sabon sunan sa. A shekara ta 1777, rundunarsa ta tashi zuwa West Indies tare da rundunar jiragen ruwa na Comte d'Estaing. Ya yi yaƙi a cikin ayyukan a Dominica, St. Vincent, Grenada, da St. Lucia, an ji masa rauni a cikin yaƙin na ƙarshe. A shekara ta 1779 ya shiga cikin mummunan Siege na Savannah
a Jihar Georgia. A shekara ta 1786, ya sami ci gaba zuwa babban jami'in.