Whakaotihia te rerenga e whai ake nei: I te wa i whakatuhia ai te ope taua o Courbiere (nama 58) i te tau 1797, i whakawhiwhia a Horn ki tetahi o ana kamupene Grenadier. I te pakarutanga o te
1806 Campaign, ka riro ia hei Major, a ko tana rerenga tetahi waahanga o te hoia o Danzig. I wehewehe a Horn i a ia ano mo tana whakapae maia i te Hagelsberg i te whakapae o Danzig.