There were also flak batteries to augment the ship's own anti-aircraft guns.

Girls as young as 13 manned flak batteries and shot down Allied planes.

For the next few hours everything hung on the flak battery at Cagny.

Suddenly every flak battery in the district began firing.

They were almost ready to enter the general's room when suddenly they heard a nearby flak battery open up.

And their flak batteries seem to fire at anything with wings.

That gave the flak batteries a better view.

This anchorage was also protected by flak batteries on the shore of the fjord.

There are flak batteries all over the place, the road supports them, but, you know, triple-A isn't dangerous to the right sort of equipment.

By 1944 it operated 39,000 flak batteries staffed with a million people in uniform, both men and women.