Kammala wannan jumla: Yaƙin Duniya na Farko ya ɓarke a shekara ta 1914, kuma tare da wannan, Janar Evert ya zama kwamandan rundunar soja ta 10. Kuma ya takaitaccen shiga cikin Gabas Prussian yakin, amma bayan 'yan kwanaki, ya maye gurbinsu da Lieutenant-General Vasily Flug, kuma daga baya ya maye gurbin tsofaffi Janar Zaltsa, bayan da ya dauki bangare a cikin mamayewa na Galicia da kuma yakin a
Kogin Vistula. A tsakiyar watan Agusta 1915, daga baya Evert ya maye gurbin shugaban hafsoshin sojojin Janar Mikhail Alekseyev a matsayin babban kwamandan Yammacin Yamma, an kuma sanya shi babban jami'in daga baya a watan Disamba na wannan shekarar. Daga Mayu zuwa Yuni, Evert da sojojinsa sun yi yaƙi da sojojin Austro-Jamus a Opatov da Lublin. Kuma a watan Satumba, sojojinsa sun yi nasarar murkushe nasarar Austro-Jamus tsakanin garuruwan Smorgon da Dvinsk, saboda wannan nasarar, an ba shi lambar yabo ta St. George na digiri na 3 a farkon Oktoba.