Two lines of troops stand at attention on a parade ground . Nearby is a naval
or battery gun of 19th century vintage (64 pounder or larger) with barrel on
the ground. The men, on command, rush to and manhandle the gun up a ramp on to
a truck. They return to their lines. On command, they rush and swivel the
barrel so that it is at right angles to the truck. They again return to line.