I'm getting to the point in a WIP in which I need to go through the First War rather exhaustively. We know so little about this time period, and I need to fill the gap.

What might have been the nature of Voldemort's first rise to power? How long would it have taken before the world became aware something was wrong?

How close would he have gotten to the kind of power that he achieved in DH?

What kind of events would have marked his rise to power, aside from the obvious disappearances?

I'd be grateful for any thoughts.