SD:FlaK 38 20mm (Sf)

 is a German Anti-air unit.

Overview
This is a simple Open Blitz truck with the flatbed modified to carry a 20mm autocannon for use against aircraft and soft targets.

716. Infanterie's Panzerjäger-Abteilung 716 3. (Flak) Kompanie had 12 20mm mounted on trucks.