<prompt> Qedela umusho olandelayo: I-R-1 ne-R-2 zazisetshenziswa kakhulu yiSoviet Air Forces ngawo-1920 njengezindiza zayo ezijwayelekile zamabhomu alula nezindiza zokuhlola. AbaseSoviet basebenzisa la mabutho ukuze basekele amabutho aseChina i- Kuomintang eNorthern Expedition ngokumelene nezikhulu zempi ngo-1926 kuya ku-1927, futhi ngokumelene namabutho aseChina ngo-1927.  <response>: ukulawula i-Chinese Eastern Railway eManchuria ngo-1929. Ama-R-1 nama-R-2 nawo asetshenziswa ukusekela imisebenzi ngesikhathi se-Basmachi Revolt e-Asia ephakathi. 