German Artillery

Anti-aircraft battery

Bundesarchive**

A 3.7 cm FlaK 18 battery; FlaK (FliegerabwehrKanone, "aircraft defense cannon", also cited as Flugabwehrkanone). The 3.7 cm Flak 18 was an anti-aircraft cannon. It was fully automatic and effective against aircraft flying at altitudes up to 4,200 m.