<prompt> Qedela umusho olandelayo: Ngo-1936, waphothula esikoleni sezempi sabaqhubi bezindiza futhi waba umshayeli wendiza eMpini Yezindiza Ebomvu. Kamuva wakhonza njengomphathi omncane ngaphakathi kwe-Air Force of the Belarusian Military District. Kusukela ngoMashi 1938 kuya ku-Agasti 1938, uBobrov walwa eMpini Yombango yaseSpain njengevolontiya langaphandle likaHulumeni waseRiphabhuliki. Ukundiza uPolikarpov I-16 neRepublican Air Force, wahlonishwa ngokunqoba kwe-13 yedwa kanye ne-4 eyabelwe emoyeni ngokumelene ne-Aviación Nacional, ngenkathi ehamba ngezindiza eziyi-126, okubandakanya izimpi zezinja ezingama-47. Ngemva kokubuyela kwakhe e-USSR, wagibela izindiza ngesikhathi  <response>: Impi Yasebusika. Kamuva wakhonza e-4th and 10th Fighter Aviation Regiments. Ngo-1941 waphothula izifundo ze-Lipetsk eziphakeme zokuqeqeshwa kwe-aviation zabaphathi be-squadron. Ngawo lowo nyaka, wajoyina i-Communist Party of Soviet Union. 