Alastor Moody
Early in my career myself and two others went to apprehend a couple of Dark Wizards who were holed up in an old shack out in the woods. They had excellent cover and it seemed like we wouldn't be able to break through their wards. They had excellent concentration and unless we found a way to break it down it seemed as if we wouldn't be able to break on through and apprehend them.
Dueling was getting us nowhere so I blasted a nest of Jobberknoll's through the window. They never make a sound until the moment of their death. But in that last moment they scream aloud every sound they had heard for the entirety of their lives in one shrill and unbearably long blast. The sound drove the two mad and they came rushing out of the house. After that it wasn't much to apprehending them.
I suppose you could say I killed two birds with one stone.