That isn't a fork. That is a special tool issued to the crunchies that enable him to strip things that he's not meant to touch, let alone strip. It's also for shorting out the starter switch on Bedford and Land-Rover vehicles when the duty driver has left the keys in his billet. You can also use it for jemmying your way into things. In short, it was an early version of your Gerber or Leatherman multi tool. There were another couple of parts to the set. one was called a spoon that they used to eat with while the other was a most versatile screwdriver.