Kammala wannan jumlar: A shekara ta 1798, Jourdan ya nada shi a matsayin shugaban ma'aikata na Rundunar Tsaro. Ernouf yana tare da Sojojin Kulawa lokacin da suka haye kogin Rhine, a cikin abin da masana tarihi na Burtaniya suka kira cin zarafin Yarjejeniyar Campo Formio, wanda ya haifar da Yaƙin Ƙungiyar Na Biyu. A ranar 2 ga Maris, an canza sunan Sojojin Danube, kuma ya yi tafiya zuwa Upper Swabia, inda ya yi yaƙi da Archduke Charles na Habsburg a Ostrach a ranar 21 ga Maris, kuma a ranar 25 ga Maris a Stockach. A cikin yaƙe-yaƙe biyu, dakarun Habsburg, sun fi na Faransa da uku zuwa ɗaya da biyu zuwa ɗaya, sun mamaye layin Faransa; Jourdan, kwamandan Sojojin, bai iya tattara dakarunsa yadda ya kamata don magance lambobin Habsburg ba, kuma ya koma cikin Black Forest a ƙarshen Maris. Ernouf ya dauki umurnin Sojojin Danube yayin da Jourdan ya koma Paris don neman karin sojoji. An maye gurbinsa a matsayin kwamandan Sojojin Danube da André Masséna, kuma ya yi aiki a matsayin shugaban ma'aikatan Massena a yakin basasa na Switzerland na 1799, lokacin da ya ga aikin a Zurich da tsakiyar Switzerland; ya sake kasancewa a
Zurich don nasarar Faransa a kan Alexander Rimsky-Korsakov.