Whakaotihia te rerenga e whai ake nei: I muri i tana tohu i nga whare wananga hoia French, i te tau 1806 ka riro ia hei rangatira mo nga grenadiers me te kaiawhina ki a Marshal Nicolas Oudinot. Mo tana whakauru ki te pakanga 1806-07 i whakawhiwhia ki a ia te whakahau Virtuti Militari me te Légion d'honneur. I te 30 o Hanuere 1808 ka riro ia hei rangatira mo te 1st Infantry Regiment o te Duchy o Warsaw. Katahi ka tohua ia hei tetahi o nga rangatira o nga roopu e wha o te Polish 1st Light Cavalry Regiment o te Kaitiaki Imperial) ka tohaina me taua waahanga mai i Tiamana ki Madrid. I whawhai ia i roto i te mana anti-guerrilla i whakahaua e Jean-Baptiste Bessières, tae atu ki
Ko Somosierra, a, i whakahaeretia e Napoleon i tana hokinga mai i Spain ki France.