I can't seem to find it anywhere, so I thought I'd add this here for the non-German speakers: Flak stands for "Flugabwehrkanone" or "Fliegerabwehrkanone" which

I can't seem to find it anywhere, so I thought I'd add this here for the non-German speakers: Flak stands for "Flugabwehrkanone" or "Fliegerabwehrkanone" which consists of the 3 words: - Flug / Flieger (Flight / Airplane) - Abwehr (Defense) - Kanone (Cannon)