Rubuta ci gaba don wannan sakin layi - Tsakanin 1381 da 1385, de Vienne ya yi yaƙi da Flemish, musamman a lokacin Yaƙin Roosebeke. A bin burinsa na barazanar Ingilishi a gida, a cikin 1385 ya yi amfani da rundunar jiragen ruwa 180 don saukar da sojoji a Scotland da niyyar mamaye Ingila, amma dole ne sojojin su janye. Bayan Charles VI ya gaji mahaifinsa Charles V zuwa kursiyin Faransa, an ba da izinin jirgin ruwa ya lalace, tun da Charles VI bai raba damuwar mahaifinsa game da al'amuran jiragen ruwa ba. Da yake ya yi sanyin gwiwa, de Vienne ya saka hannu a Yaƙin Crusade na Barbary
kuma ya shiga cikin yakin basasa na Sarki Sigismund na Hungary da Turks. An kashe shi a lokacin yakin Nicopolis, a Bulgaria.