 Rambai muchinyora ndima iyi - Pamwe chete nendege dzaishandiswa nevanozvipira kurwisa maJapan pamusoro peChina, maSB akashandiswa mukurwisa maJapan panguva yekurwa padyo neLake Khasan kumabvazuva kwenzvimbo yemuganhu weChina neRussia muna Chikunguru-Nyamavhuvhu 1938, imwe SB yakarasika. Kurwisana pakati pemasimba eSoviet neJapan kwakatangazve paKhalkhin GolkuMabvazuva kweMongolia muna May 1939. Nepo SBs havana kubatanidzwa May mhepo hondo, apo mauto Soviet akatambura kurasikirwa kukuru, Regiments maviri SBs vakanga kutumirwa kuMongolia muna June, kubhururuka mishoni dzavo rokutanga musi 26 June. MaSB akashandiswa zvikuru kurwisa mauto eJapane paakarwisa mukuvamba kwaJuly. The Soviet SB regiments yaisanganisira musanganiswa mangwanani uye gare gare SBs, vane nokukurumidza yakasiyana zvinokonzera matambudziko kuramba formation, apo Japanese Nakajima Ki-27 varwi vakaratidza unyanzvi mukushandisa murombo kuzvidzivirira zvombo ari SB, pamwe redhiyo opareta uchishanda zvose dorsal uye ventral pfuti. Kuti kuderedza kurasikirwa kune varwi vechiJapan, vaSoviet vakashandura nzira, vachibhururuka SB mishoni pamusoro pe6,100 m 20,000 ft uko kwakanga kwakaoma kuti vaJapan vabatane. MaSB akaramba achishandiswa kurwisa maJapan sezvo maSoviet nemaMongolia mauto aitungamirirwa naGeorgy Zhukov akaita zvinobudirira kusvikira pakasainwa chibvumirano chekumisa pfuti muna September 1939. 