about 4 years
ago -
warthunder
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In October, 83 years ago, the I-15bis took to the skies. This I-15 variant had a new upper wing section, a more powerful engine, and was capable of carrying up to 6 rockets. A total of 2,408 were built and served from 1938 with the USSR and China and with Spain from 1939. http://pbs.twimg.com/media/EkNESfAWkAAXwoU.jpg