Gellert Grindelwald's Army was a loose term to describe a group of witches and wizards who followed the dark wizard Gellert Grindelwald and his quest to expose the magical world to the non-magical world, allow Wizardinkind unlimited freedom and to rule over non-wizards as supreme.
Members of this group originated from across the world, such as the United Kingdom, the United States, France, Iceland and Japan.
Many wizards and witches joined Grindelwald's cause, since they were tired of living in secrecy due to the global non-magical majority.
Grindelwald himself stated that he did what he did because of his love for the magical community, and he often used the motto "for the greater good".
He was known to host clandestine events, where he'd invite witches and wizards to listen to his speeches. He often managed to recruit new followers through these events and also encouraged the attendees to spreach his word. One of these events was held in Paris, 1927.
Unlike the later Lord Voldemort, Grindelwald did not appear to be prejudice against Muggle-borns, and welcomed followers such as Credence Barebone and Queenie Goldstein. He recruited these two by taking advantage of each desires (Barebone's desire to find out who he really is and Goldstein's desire to marry a muggle, which is not allowed in wizaridng America).
Despite the facade of love and kindness shown in public, Grindelwald's inner circle (also known as Grindelwald's acolytes) were a very vile group, committing acts such as terrorism, murder and assasinations. One example of such was the murder of an innocent muggle family in Paris, inclusing that of a toddler.
Known members of this inner circle were Vinda Rosier and Mrs. Carrow, who come from same Pureblood-families as the later Death Eaters.
- Gellert Grindelwald: The leader of the army.
- Vinda Rosier: A French witch, who serves as Grindelwald's lieutenant.
- Queenie Goldstein: An American witch who is extremely accomplished Legilimens, and serves as an advisor.
- Credence Barebone: An American wizard who has a parasitical force known as an Obscurus, which he can control. Grindelwald plans to use Barebone to kill Albus Dumbeldore.
- Gunnar Grimmson: An Icelandic wizard who works as a bounty hunter. He is involved with Grindelwald and agreed to assassinate Irma Dugard on the Dark Lord's behalf, though he is a secret member of the organisation.
- Abernathy : An American wizard who previously worked at MACUSA alongside Queen Goldstein. Serves as an spy and infiltrator.
- Carrow: A British witch, and part of the inner circle. Murdered a muggle toddler on Grindelwald's orders.
- Nagel: A wizard who observed Credence Barebone, while the latter was work at the Circus Arcanus.
- Krafft: Inner circle member.
- MacDuff: Inner circle member.
- Krall (Deceased): Inner circle member, who once questioned Grindelwald's plan to recruit Barebone, as well as the idea of killing Albus Dumbledore. He later died while crossing an enchanted fire that tests one loyalty to Gellert Grindelwald.
- The logo of the organization includes the symbol of the Deathly Hallows.
- Vinda Rosier's role in the army resembles that of Bellatrix Lestrange.