FlaK 88 mm gun was a German anti-aircraft and anti-tank artillery gun used during World War II. The FlaK 88 is featured in many of the Call of Duty games.
The anti-aircraft gun was not very useful during World War I because it could not fire high enough and it couldn't fire rapidly enough to shoot down much planes. Soon the German Krupp company developed the new guns in partnership with Bofors of Sweden. The original design that led to the 88 was a 75 mm model. During the prototype phase, the army asked for a gun with considerably greater capability than the 75.
The designers started over, using another common German calibre, 88 mm. The forces of Nazi Germany employed the 88 extensively in World War II, not only in its original role as an anti-aircraft gun, where it performed well, but also as an anti-tank gun. Throughout the entire war the 88 mm gun had only a few rivals. The German Condor Legion made extensive use of the FlaK 88 in the Spanish Civil War, where its usefulness as an anti-tank weapon and a general artillery piece exceeded its role as an anti-aircraft weapon. Erwin Rommel also used the 88 as an anti-tank weapon, first in France and later in North Africa. His timely use of the gun to blunt the British counterattack at Arras ended any hope of a breakout from the blitzkrieg encirclement of May 1940.