Tuhia he tomokanga mō tēnei wāhanga - I kaha whakahē a Ludwig i te hononga o tōna pāpā ki a Napoleon I o Wīwī, engari ahakoa ōna kaupapa ā-Wīwī, i uru atu te rangatira o te karauna ki ngā pakanga a te emepara ki ngā ope Bavarian i te tau 1806. Hei rangatira mo te 1st Bavarian Division i te VII Corps, i mahi ia i raro i te Marshal François Joseph Lefebvre i te 1809. I ārahi ia i tana wehenga i te Pakanga o Abensberg
i te 20 o Aperira.