The Legendary 88 mm gun (eighty-eight) is a German anti-aircraft and anti-tank artillery gun from World War II. They were widely used throughout the war, and could be found on almost every battlefield. Developments of the original models led to a wide variety of guns.
The name applies to a series of anti-aircraft guns officially called the 8,8 cm FlaK 18, 36 or 37. FlaK is a German contraction of either Fl(ugzeug)a(bwehr)-K(anone) or Fl(ug)a(bwehr)-K(anone) (hence the capital K, nowadays one word).