This is for my resume so I want to use the right preposition here . . .
"Researched and drafted judicial opinions on/for a wide variety of civil and criminal cases"
I cannot tell if I should use ON or FOR in this situation.
Later in my resume for another experience I have been using on . . . "Researched and drafted reports and recommendations on a wide range of issues, including . . . "
Now I am confused and don't know what to do.