During the Hundred Years War, John switched his support between the English and French a few times, mainly for his own personal gain; always aligning with the side who promised him the most political and economic benefits at the relevant time.
Selama Perang Seratus Tahun, Jean mengganti dukungannya di antara Inggris dan Prancis beberapa kali, terutama untuk kepentingan pribadinya; selalu berpihak pada sisi yang menjanjikannya lebih banyak keuntungan politik dan ekonomi pada saat itu.