Flak ahead!
A Sd. Kfz. 8 (12-ton tractor by Daimler Benz) of an AA unit of the german Luftwaffe moves to the front. The engine of the tractor is protected by armor plates. The photo was taken in the Carpathian Mountains/Romania.
This is a companion discussion topic for the original entry at https://www.ww2incolor.com/gallery/german-artillery/19221/flak-ahead!