How exactly does the flak cannon work? Who invented it and when?
A flak cannon is a form of German anti-aircraft gun which fires projectiles into the air that are timed to explode at a certain altitude. It was largely used against Allied aircraft in bombing raids and was one of the most important artillery weapons of the Second World War.
The first prototypes of the weapon were developed in as early as 1928, but considerable improvements in both its design and firepower led to the most well known version, the Flak 88, being first produced in 1933. The artillery could also be used against tanks, with a number of specifically designed anti-tanks guns being produced towards the end of the war.