<prompt> Bhala ukuqhubeka kwalesi sigaba - Ngo-Agasti 16, 1920, ngesikhathi seMpi yaseWarsaw, wabelwa njengesikhulu esiphethe iPolish 4th Cavalry Brigade, kamuva eyaba yi-core ye- Nieniewskis Operational Group ngesikhathi seMpi yoMfula iNiemen  <response>: . futhi. Ngemuva kokuphela kwezimpi zePoland-Soviet War, uNieniewski waphothula izifundo zeGeneral futhi ngoJanuwari 10, 1921, wakhushulelwa esikhundleni sokuba nguColonel of Cavalry. 