What is oscillating turrets?

Oscillating turrets are a type of turret used in tanks and other military vehicles. They differ from traditional turrets in that they are mounted on a single pivot point and can oscillate vertically to increase the gun's depression and elevation angles. This allows the gun to shoot from a lower position, which increases the tank's concealment, and also provides better aiming at targets on steep terrain. The oscillation of the turret is typically achieved through a hydraulic or electric system and can move up to 15 degrees vertically. This type of turret was first used in the French AMX-13 tank in the 1950s and has since been adopted by other tanks, such as the American Sheridan and the German Leopard 1.