Rubuta ci gaba don wannan sakin layi - A 1803 ya kasance babban jami'in a cikin rundunar masu tsaron Hanoverian kuma, lokacin da Yarjejeniyar Artlenburg ta rushe sojojin Hanoverian a ranar 5 ga Yuli a wannan shekarar, yana ɗaya daga cikin na farko da ya shiga abin da ya zama Sarkin Jamus na Sarki. A cikin 1805 ya jagoranci ba da nasara ba zuwa arewacin Jamus a lokacin Yaƙin Ƙungiyar ta Uku kuma shekara guda daga baya shi da rundunarsa suka koma Gibraltar. A cikin 1807 sun sake komawa, zuwa Zeeland, inda suka yi yaƙi da Denmark a cikin Gunboat War (wanda aka fi sani da Wars na Turanci
) Ya ce: A kan hanyar dawowa jirginsa ya nutse a gabar tekun Netherlands kuma an tsare shi a kurkuku a Borkum har sai an sake shi a musayar fursunoni a 1808.