The article examines a little-known episode of the Civil War – the activities of the Military Council of the Atkarsk-Rtishchevo fortified region from the moment the fortified area was created on July 19, 1919, until it was disbanded on August 8, 1919. The activities of the Military Council contributed to the repulse of the attack of the Caucasian Army of the Armed Forces of the South of Russia on Saratov.