8,8 cm Flak 37 with Kraus-Maffei(Sd.Kfz.7) tractor from the Armoured Brigade

142 8.8 cm AA Guns(Flak 18 and 37) were the backbone of Bulgarian AA defense in the 1940's.Some guns(102) were mobile(mounted on 2 Sd.Anh.202 trailers), while the rest were stationary.

1st(Heavy) Battery of the Anti-aircraft Artillery Detachment of the Bulgarian Royal Army's Armoured Brigade had 6 8.8 cm Flak 37 guns.
They were towed by "Kraus-Maffei" halftracks (Bulgarian designation for Sd.Kfz.7 KM.11).There were guns with and without gun shields.