Trollkarlar är kända för att slåss i Muggle-krig ...
Från Pottermore Magisk historia i Nordamerika: 1920-talet
The wizards of America had played their part in the Great War of 1914-1918, even if the overwhelming majority of their No-Maj compatriots were ignorant of their contribution. As there were magical factions on both sides, their efforts were not decisive, but they won many victories in preventing additional loss of life, and in defeating their magical enemies.
Med tanke på att det var ett utkast till det stora kriget (aka första världskriget) och trollkarlarna kämpade, slår vi slutsatsen att några utarbetades.