https://youtu.be/dcrHvLSDY4Y In the previous posts we covered helicopters that dominate the air. In order to efficiently combat enemy aviation the Soviet army has a well-known anti-aircraft self-propelled gun ZSU-23-4V1 "Shilka". A distinctive feature of this vehicle is four 23 mm autocannons with a colossal rate of fire of 3 400 rounds per minute. It is capable of protecting military convoy on the march, destroying air targets and lightly armored ground units.