giannibugnosagace:

xplanes:

“Berlin flak protection

All around the capital in a wide arc lies a broad iron line of defense, the safe haven of the imperial capital from enemy attacks from the air. Day and night the men of the air defense, whether on anti-aircraft gun, searchlight, or listening device, are on the watch. We take photographs of the visit of our reporter to the anti-aircraft artillery.
Shown here: one of the giant listening devices that can capture even the slightest noise of an engine.”
(1939, via)

B.

(via pricklylegs)

http://ru.wikipedia.org/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Bundesarchiv_Bild_183-E12007,_Horchger%C3%A4t_der_Flak_bei_Berlin.jpg