Kammala jumla mai zuwa: Henry ɗan Frederick William II na Prussia ne (1744-1797) da matarsa ta biyu Frederika Louisa (1751-1805), 'yar Louis IX, Landgrave na Hesse-Darmstadt. Henry ya shiga soja a ranar 5 ga Satumba 1795 a matsayin fähnrich a cikin Kamfanin Rayuwa na 1st Guards Battalion. Ya kuma yi aiki a matsayin colonel a lokacin
1806-07 yaƙin neman zaɓe a kan Napoleon - a Auerstadt an ba shi doki daga Gerhard von Scharnhorst bayan da aka kashe doki na Henry a ƙarƙashinsa. A cikin 1807 an sanya shi kwamandan Rundunar Sojojin "von Schöning". A cikin yakin 1813 ya kasance a kan ma'aikatan hedkwatar Janar Peter Wittgenstein na Rasha. A ranar 31 ga Mayu 1815 an daukaka shi zuwa Janar na Sojoji.