 Nyorai kupfuurira kweiyi ndima - Munguva yeHondo yeChitatu Chibvumirano muna 1806, Barrois akatungamira chikwata chake muhondo dzeHalle, Nossentin neLübeck. Muna 1807, akarwa muhondo yeMohrungen. Musi wa 14 Kukadzi 1807 akasimudzirwa kuva mukuru webrigade. Akapiwa brigade muDuponts division, Barrois akatungamira mauto ake muhondo paBraniewo Braunsberg uye muhondo yeFriedland musi wa14 Chikumi 1807. PaFriedland, divi raDupont rakazviratidza zvikuru, richipinda nepakati peRussia uye richidzorera kurwisa kweRussian Imperial Guard. Mukuonga, Napoleon akagadza Barrois kuva Mukuru Mukuru weLegion of Honor. 