The group of students at Hogwarts School of Witchcraft and Wizardry that decided because Professor and High Inquisitor,
Dolores Umbridge would not properly equip her students with the knowledge to defend and protect themselves against dark wizards, they needed to arm themselves with charms, encantations, and spells, and have a better understanding of Defense Against the Dark Arts.
Dumbledore's Army is also referred to as the D.A. so no one can deipher what its members are discussing.
The leader is Harry James Potter. Members include: Ron Weasley, Hermione Granger, Hannah Abbott, Lavender Brown, Katie Bell, Susan Bones, Terry Boot, Cho Chang, Michael Corner,
Colin Creevey, Dennis Creevey, Marietta Edgecombe (betrayed the D.A.), Justin Finch-Fletchley, Seamus Finnigan, Anthony Goldstein, Angelina Johnson, Lee Jordan, Neville Longbottom, Luna Lovegood, Ernie Macmillan, Padma Patil,
Parvati Patil, Zacharias Smith, Alicia Spinnet,
Dean Thomas, Fred Weasley,George Weasley, and Ginny Weasley.
They meet in the Room of Requirement, at random times, 1. because of all the studying and preparation required for their
O.W.L.S and 2.to ensure the least risk of being caught. for Dumbledore's Army is a secret club, which no administrator can ever be informed of.
their enemies incude: The Ministry of Magic, the Inquisitorial Squad, Dolores Umbridge, Lord Voldemort, and the Death Eaters