Is there any guidance available for documenting in my case writeup a special assignment as Research Program Representative (RPR) on new research facilities construction?

Indeed there is. Refer to Special Assignments and Projects under Demonstrated Accomplishments in Manual 431.3-ARS, Chapter 6. More.

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.