Kammala jumla mai zuwa: Knobelsdorff, asali jami'in sojan doki ne, ya sami kyaututtuka a cikin Yaƙe-yaƙe na Silesian kuma ya kasance kwamandan rundunar sojojin "Brunswick-Bevern" da "von Schwarz". A shekara ta 1776 an sanya shi Inhaber na rundunar sojan sama "Stojentin", wanda ke zaune a Stendal. A lokacin Yaƙin Gasar Bavarian ya bambanta kansa a matsayin kwamandan brigade a cikin sojojin Yarima Henry. A cikin yaƙin neman zaɓe a kan Holland a 1787, ya jagoranci rukunin a gefen hagu. Kwamandan sojojin a wannan lokacin shi ne Ferdinand, Duke na Brunswick. A lokacin barkewar cutar
yaƙi da Faransa a 1792, ya kasance a Stendal, yayin da rundunarsa ta shiga rundunar Duke na Brunswick. Koyaya, lokacin da yanayin yaƙin ya tsananta kuma Duke ya kamu da rashin lafiya kuma dole ne ya bar sojojin haɗin gwiwa a watan Maris na 1793; Knobelsdorff ya ɗauki matsayin babban kwamandan sojojin Prussian. A lokacin rani na 1793 Knobelsdorff ya ci gaba da zama Janar na Sojoji kuma ya sami yabo na musamman daga sarki. Baƙon da aka saba da shi daga baya, an gabatar da tsohon janar zuwa Generalfeldmarschall a shekara ta 1798 kuma har yanzu ya shiga cikin motsa jiki a Potsdam a shekara ta 1799.