What is "portee"

A portee is a truck that carries a gun on its bed, such that the gun is not fixed permanently to the vehicle, can be quickly unloaded and can be fired from the truck.

While the term portee can be used to denote any truck carrying a gun on its bed, it is most often used to describe equipment used by British/ Commonwealth forces in the North African Campaign of World War II. Modern terms for such vehicle are technical and/or gun truck.