Pedzisa mutsara unotevera: Muna 1800, Loison akaiswa muArmy of the Reserve kuti atungamirire boka revarume 5.300 uye akayambuka Great St. Bernard Pass naNapoleon. Akakuvadzwa achitungamirira kurwisa kwakakundikana paFort Bard musi wa25 Chivabvu 1800. Achipora nokukurumidza, akatungamirira boka rake muGuillaume Philibert Duhesme's corps mukudzorera Josef Philipp Vukassovich's command. Akapotsa
Hondo yeMarengo nokuti varume vake vakanga vakabatikana kubata Milan neCremona, vachidzingirira vaAustria kumabvazuva.