Rubuta ci gaba don wannan sakin layi - Tare da farawar Yaƙin Rasha da Japan a 1904, Diterikhs ya zama babban jami'in da ke da alhakin ayyuka na musamman a hedkwatar rundunar soja ta 17. Ya isa gaban a Manchuria a watan Agusta 1904, kuma ya shiga cikin yakin Liaoyang, Shaho
da kuma Mukden. A ƙarshen yaƙin, ya zama Laftanar. Bayan ƙarshen yaƙin ya koma Moscow, kuma a cikin 1906 ya kasance babban jami'in da ke da alhakin ayyuka na musamman a hedkwatar rundunar soja ta 7. A shekara mai zuwa, yana da irin wannan matsayi a hedkwatar Kiev Military District. An ba shi mukamin Kanal a shekarar 1909. A cikin 1910, ya yi aiki a matsayin babban mataimaki a hedkwatar Yankin Soja na Kiev. Daga shekarar 1913, Diterikhs ya kasance shugaban Sashen Motsawa na Babban Daraktan Janar.