Tuhia he tomokanga mo tenei waahanga - I mahi ano a Defrance i te Whakatairanga o Switzerland o te tau 1799 hei Tumuaki Tuarua mo te 1st Division o Jean-Baptiste Jourdan's Army of the Danube; i muri i nga ngaronga i nga pakanga o Ostrach
I te Poutu-te-rangi 1799, i whakakotahihia te Ope Taua o te Danube me te Ope Taua o Helvetia, i raro i te whakahau a Andre Massena. I haere tonu a Defrance i roto i tona kaha hei rangatira o te tari. I te Pakanga Tuatahi o Zurich i te Pipiri 1799, i tohua ia ki te mara hei rangatira rangatira, he honore i whakahekehia e ia, i tono ia kia whakawhiwhia ki a ia te rangatira o te roopu hoia hoia. I whakawhiwhia ia ki te rangatira o te 12th Regiment o "Chasseurs-a-Cheval". Hei "Chef-de-Brigade", he rite ki te koronel i roto i te ope taua a te French Revolutionary-era, i haere a Defrance ki Itari ka uru ki nga mahi e arahi ana ki te Pakanga o Marengo. I te hotoke o te tau 1800-1801, i pakanga ia i nga Grisons i Switzerland ka hoki ki Parani i muri i te Tiriti o Lunéville i te tau 1801.