"Aerial Denial at your service sir"

The quad barrelled ZPU-4 is a small and towable AA weapons, although it is small is a monster in its class. Firing shells of 14.5mm caliber it can really make short work of helicopters, infantry and light vehicles, this makes this a versatile weapons. In this photo soldiers of the 23rd Light Anti-Aircraft Regiment, Royal Tan Artillery, have set up an AA position to keep the sky's clear of aircraft and to give fire support to friendly troops.