Rubuta ci gaba ga wannan sakin layi - Daga Janairu 1798 zuwa Maris 1799, Zach ya kasance shugaban ma'aikatan "Armee von Italien". Ya sake zama shugaban ma'aikatan daga Yuli 1799 zuwa Yuni 1800. A ranar 9 ga Yuni 1799 ya sami ci gaba zuwa Janar-Major. A cikin wata wasika ta sirri zuwa ga jakadan Rasha wanda gwamnatin Austriya ta bude, kwamandan sojojin Alexander Suvorov ya bayyana Zach a matsayin "mai sauti, mai hankali da ƙwararru, amma babban mai tsara "Unterkunft" (dabaru) kawai lokacin da nake so in fashe cikin aikin wuta". Kodayake Suvorov ya yi amfani da "Unterkunft" a matsayin abin ƙyama, Zach ya yi farin ciki maimakon cin mutunci lokacin da aka nuna wasikar. Zach ya yi aiki sosai a yakin Novi
a ranar 15 ga watan Agusta. Don ayyukansa, wani sarki mai godiya ya ba shi kyautar Knight's Cross na Sojan Sojan Maria Theresa a ranar 13 ga Oktoba, 1799. Wani ƙwararren masanin lissafi, Zach ya fi zama a gida a fagen aikin injiniya na soja fiye da yadda ya kasance a cikin jagorancin yaƙi ko a cikin rawar aiki.