This should not be confused with a Special Constable, which was a voluntary British police officer, that existed alongside the War Reserve Constable.
War reserve constable (or WRC, war reserve police constable, WRPC) was a voluntary role within the ranks of the British police forces. As suggested by the title, the role was as a voluntary police constable during the war. War reserve constables were sworn in under the Special Constables Act 1923, and had the full powers of a police officer.