<prompt> Ngwala tšwetšopele ya serapa se - Karolong ya bobedi ya 1926, Berek o ile a hlankela sehlopheng sa bahlabani ba maoto ba 83 kua Kobryn. Ka December 1926 o ile a išwa gape go 9th Legions Infantry Regiment, gomme ka nako ya May 1929 - September 1931, o ile a tsena Wyższa Szkoła Wojenna kua Warsaw. Ka morago ga go fetša dithuto tša gagwe tša go ba mohlankedi, o ile a ba hlogo ya bašomi ya 4th Infantry Division, yeo e bego e le Toruń 1931 - 1934, gomme ka 1934 - 36, o ile a laela 1st Rifle Battalion kua Chojnice. O ile a hlatlošetšwa go ba Letefotenente Mokolonele ka la 1 Pherekgong 1935, Berek o hlanketše go Polish General Staff October 1936 - July 1939. Dibeke tše sego kae pele ga Tlhaselo ya Poland, o ile a romelwa Jarosław, go tla go laola 3rd Legions Infantry Regiment. Berek o ile a dula setulong sa gagwe go fihlela ge go neelwa ga Modlin Fortress, ka 29 September 1939 bona Ntwa ya Modlin  <response>: Mongwalo o sekamego ke wa rena. 