Kammala jumla mai zuwa: Lokacin da Yaƙin Ƙungiyar Na Biyu ya fara a farkon 1799, Nauendorf ya yi yaƙi a nasarar Austrian a
Ostrach (Maris 21) sannan kuma a Stockach (Maris 25). A farkon watan Maris ya jagoranci mai gadi na 17,000 a fadin kogin Lech ta Augsburg, don turawa a Ostrach, wani ƙauye game da Kogin Danube kuma ƙasa da Free Imperial City na Pfullendorf. Rundunar Danube ta Jourdan ta tsallaka Rhine a ranar 1 ga Maris, kuma ta koma gabas don yanke sadarwa tsakanin babban sojojin Austriya, kusa da Augsburg, da sojojin Austriya a arewacin Italiya. A Ostrach, mai tsaron gidansa ya ci gaba da ci gaba da ci gaba da ci gaba da ci gaba da ci gaba, amma babban rundunar sojojin ba ta da wata rana a baya, kuma Archduke Charles, kwamandan sojojin Austrian, ya raba sojojinsa zuwa gungu uku na kai hari don kai hari a lokaci guda a wurare uku a kan layin Faransa; bayan wata rana ta mummunan fada, Austrians sun kewaye Faransanci a arewa da kudu, kuma sun yi barazanar karya ta hanyar layi a tsakiya. Faransanci sun janye zuwa Mösskirch, sannan zuwa Engen da Stockach, inda, a ranar 25 ga Maris, aka sake yin yaƙi. A Stockach, Nauendorf ya sake umurni da masu tsaron gidan Austrian, wanda ya kunshi dakarun da suka kware, kamar yadda ya kasance, a cikin yaƙe-yaƙe na Habsburg. An sake tura masu tsaron gaba, ko "Vorhut", kafin yaƙin a matsayin cibiyar babban layin Austrian, kuma ya ɗauki nauyin yaƙin farko.