Cika wannan jumla:
yaƙin neman zaɓe na 1796, Joubert ya zama wani ɓangare na umarnin Napoleon Bonaparte. Ya jagoranci brigade karkashin Pierre Augereau a yakin Millesimo da kuma karkashin André Masséna a yakin Lodi. Ya kuma yi yaƙi a yakin Castiglione a watan Agusta. Ba da daɗewa ba ya jawo hankalin Napoleon Bonaparte, wanda ya sanya shi janar janar a watan Disamba na 1796, kuma ya zaɓe shi sau da yawa don umurnin manyan ƙungiyoyi. Don haka, ya jagoranci rundunar riƙewa a kwarin Kogin Adige a Yaƙin Rivoli. A cikin kamfen na bazara na 1797 (mamayewa na Ostiryia) ya umurci sashin hagu na sojojin Bonaparte a cikin Tyrol tare da babban bambanci, yana yaƙi da hanyarsa ta cikin tsaunuka don sake haɗuwa da shugabansa a Styria. Janar Joubert ya shiga tsakani a kan kamfanonin 'yan bindiga na Tyrolean, tare da wani sako mai fushi a ranar 15 ga Fabrairu, 1797, don murkushe juriyarsu: "Na bayyana cewa na yi la'akari da magabtan Faransa, duk iyayen, waɗanda' ya'yansu suka shiga cikin kamfanonin 'yan bindiga na Tyrolean, za a daure su kuma za a kwace dukiyarsu don amfanin Jamhuriyar. "