Try modifying this answer for your evil purposes.
The following assumes the target subfolders' location contains only the subfolders where the PDFs may go and that every PDF that you want to move has a name formatted as the corresponding subfolder's name followed by exactly three characters (same as in your examples).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.