A German Reichswehr Self-Propelled Anti-Aircraft Battery of Kraftwagen 19 (Sd.Kdf. 1)
A German battery formed by four self-propelled guns Kraftwagen 19 (Sd. Kfz. 1).
The vehicles were the Krupp-Daimler KD-1, carrying 7,5-cm L /36 Flak (Anti-Aircraft Gun) Krupp.
The vehicles appear out of focus because of a salvo fired immediately before, or because the diesel engines were working. Germany, end of the 20s.