Colour photo of Canadian 40mm Bofors AA gun and crew

colourphotoofcanadian40mmboforsaagunandcrew2.jpg

Sergeant Traplin, Bombardier Heldon, Bombardier Blank and Sergent Kennedy post with their Bofors gun after shooting down a Luftwaffe aircraft over the beachhead. The person to the rear of the position facing left is probably using the Stiffkey Sight, a mechanical computer that moved the gunners sights to account for leading a fast moving target.

The Bofors gun in mobile form was commonly towed by either a GMC or Dodge 6x6 truck, and had a total crew of 8 including truck crew to include truck driver, gunner, two loaders, direction setting, elevation setter, radio operator and the gun commander.

http://en.wikipedia.org/wiki/Bofors_40_mm