<prompt> Bhala ukuqhubeka kwalesi sigaba - I-R-1 ne-R-2 zazisetshenziswa kakhulu yiSoviet Air Forces ngawo-1920 njengezindiza ezijwayelekile zamabhomu alula nezindiza zokuhlola. AbaseSoviet basebenzisa amabutho asekela amabutho aseChinese Kuomintang eNyakatho Expedition ngokumelene nezikhulu zempi ngo-1926-27, futhi ngokumelene namabutho aseChina ukuze alawule i-Chinese Eastern Railway  <response>: eManchuria ngo-1929. Ama-R-1 nama-R-2 nawo asetshenziswa ukusekela imisebenzi ngesikhathi se-Basmachi Revolt e-Asia ephakathi. 