Grese was put on trial for war crimes at the "Belsen Trial." Instead of having one big trial with hundreds of defendants, the Nuremberg Trials were separated into smaller trials. For example, people who were accused of committing crimes at Bergen-Belsen were put on trial at the Belsen Trial. Grese was tried there with 44 other people. Her trial lasted from September to November of 1945. She was given a lawyer named Major L. Cranfield.