Any knife experts? (regarding a PAL RH 36)

So my grandma gave me a knife that my grandpaused while he was deployed in Africa during WWII. It's a PAL RH 36. All I want to know is a little info on it. Like was it the most common knife and other random facts about. Also she gave me two African knifes that he bought while he was there and was wondering were I could find info on those also. thanks

And for something random I am 90% sure that this is the knife that he used to kill a German with. The reason I am sure about this is because he mentioned it in a letter he wrote home.

Wouldn't a Google search help you more?

I did google it but all that came up was sites that sold it.