A set of regulations enacted by the High Commissioner for Palestine, under his authority under the Palestine (Defence) Order in Council, 1937, and published in the Palestine Gazette on 27 September 1945. The purpose of the regulations was to give the Mandatory government and security forces additional authority to act against Jewish and Arab underground organizations. They enabled the government to put restrictions on movement and free speech, establish a military court system, expropriate and demolish houses, place suspects under administrative detention and more. The regulations remain in effect in Israel and the Palestinian Territories under Israeli law, apart from several that were repealed over the years, with the application of some dependent on the official existence of a state of emergency, that has been continuously declared since 1948.