Rubuta ci gaba don wannan sakin layi - A lokacin Yaƙin Silesia na Farko, Gessler ya bambanta kansa a Mollwitz da Chotusitz, inda ya jagoranci sojojin doki na hagu na Wilhelm Dietrich von Buddenbrock. Bayan yaƙin, Gessler ya sami ci gaba zuwa "Generalleutnant" kuma an ba shi lambar yabo ta Black Eagle. A cikin yakin Hohenfriedberg, hawansa tare da Bayreuth Dragoon Regiment, wanda aka kama kalaman 67, ya zama daya daga cikin hare-haren da aka fi sani da sojan doki na Prussia. A Yaƙin Kesselsdorf
a ranar 15 ga Disamba, 1745, Gessler ya jagoranci sojojin doki na gefen dama.