Rubuta ci gaba don wannan sakin layi - Baranov, sa'an nan kuma kyaftin, ya yi yaƙi a cikin yakin basasar Spain tsakanin Oktoba 1936 da Nuwamba 1937, da farko ya umurci kamfanin tanki. Bayan rukunin jiragen ruwa na Soviet tare da tankunan T-26 da BA-6 da FAI masu sulke, wanda "Kombrig" Dmitry Pavlov ya jagoranta, ya fara isa Spain a farkon Disamba 1936, Brigade na Tank na 1 na Jamhuriyar Republican ya fara kafawa daga rukunin, kuma Baranov ya zama kwamandan Battalion Tank na 1. A lokacin da 'yan Nationalist ke motsawa
a Madrid ya ci gaba a ranar 3 ga Janairu, 1937, an tura brigade zuwa gaba, ya isa kwanaki uku bayan haka don shiga cikin hare-haren Republican. Battalion na Baranov ya yi yaƙi a cikin yaƙe-yaƙe na tsaro tare da sojojin Jamhuriyar tsakanin 6 da 10 ga Janairu, lokacin da BA-6s suka buga tankunan Nationalist da yawa. A watan Fabrairu, Baranov da brigade sun shiga cikin Yaƙin Jarama, suna kawar da hare-haren bindigogi na Nationalist, amma yaƙin ya ƙare a cikin rikici.