But the small shells can’t penetrate the armor of a tank, and they aren’t as well armored as one.

That firepower is also quite deadly when turned against infantry and light vehicles. Those cannons boast ultra-rapid rates of fire to shred low-flying aircraft, or in the 21 st century, cruise missiles and drones. That means they’re likely to be closer to the frontline than self-propelled howitzers.

Self-propelled anti-aircraft guns like the legendary Soviet ZSU-23/4 “Shilka” (armed with quadruple 23-millimeter cannons) or the German Gepard (twin 35-millimeter guns) are designed to provide low-altitude air defense for advancing columns of armored vehicles. Tracks, armor and wicked looking cannons? A tank, these do not make by themselves. AFP PHOTO / Prakash SINGH (Photo credit should read PRAKASH SINGH/AFP via Getty Images) AFP via Getty Images The Indian Army celebrated their 58th anniversary by displaying their latest military equipment and awarding officers, soldiers and units. New Delhi, INDIA: An Indian Tunguska Mount is displayed to the public during the Army Day parade in.

Best modern battle tanks