Martial magic

The terms martial magic and combative magic are used to refer to the forms of magic used defensively and offensively in wizard duels.

According to Garrick Ollivander's studies on wandlore, wands made of aspen are more suited for martial magic and, thus, their owners are (or more likely to become, in the future) accomplished duellists. Wands of ebony are also highly suited to all manner of combative magic, and ebony wand owners have been found among both the ranks of the Order of the Phoenix and the Death Eaters.

Harfang Munter, the second Headmaster of Durmstrang Institute, was responsible for establishing the school's reputation for duelling and all sorts of martial magic.