Kammala jumla mai zuwa: Ludwig ya yi watsi da kawancen mahaifinsa da Napoleon I na Faransa amma duk da siyasarsa ta adawa da Faransa, yarima mai jiran gado ya shiga yaƙe-yaƙe na sarki tare da sojojin Bavarian da ke kawance a 1806. A matsayin kwamandan na 1st Bavarian Division a cikin VII Corps, ya yi aiki a karkashin Marshal François Joseph Lefebvre a 1809. Ya jagoranci sashinsa a cikin aikin a
Yaƙin Abensberg a ranar 20 ga Afrilu.