Since 1943, it was becoming clearer that Germany would fold under the pressure of the Allied forces. The Russians were only a day or so from overtaking the chancellary. Hitler urged to escape to Berchtesgarden (where he owned a home), but instead chose to commit suicide with his wife Eva.
Answer:
Judicial review is a kind of court case, in which someone (the “claimant”) challenges the lawfulness of a government decision. If the claimant wins, then the government decision can be declared unlawful, or quashed. That will sometimes mean that the decision has to be made again.