Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The 12th Army (Russian Civil War 1st Formation) of the Soviet Red Army was first formed from Soviet forces in the north-eastern Caucasus in 1918.The 12th Army (Russian Civil War 2nd Formation) was formed from the 1st and 3rd Ukrainian Red Armies in central Ukraine in the summer of 1919. In July 1920 Simon Aralov was chief of intelligence with this unit.The 12th Army (1st Formation) (RKKA) of the Soviet Red Army was formed from the Southern (Cavalry-Mechanised) Army Group of the Kiev Special Military District during 1939-40.