Same-sex marriage in Guernsey changes to other laws are approved by the States at its meeting on 26 April. On 26 April, the States approved both ordinances, and the law took effect on 2 May 2017. It applies to the jurisdiction of Guernsey, but not to Alderney and Sark. Alderney, one of the three constituent Channel Islands which form the Bailiwick of Guernsey, has full autonomy in most legal matters (except foreign affairs and other powers that have been transferred to the States of Guernsey), through the States of Alderney. Same-sex marriage is legal in Alderney. On 21 February 2017, the States of Alderney's
Fortifications of Alderney cannon. Barracks had also been built to house 568 men and the militia totalled 384 men. A telegraph tower was constructed above La Foulère in 1811, enabling signals to be relayed visually to Le Mât in Sark and on to Guernsey - early warning of attack during the Napoleonic Wars was of strategic importance. In 1831 the Alderney Militia, now reduced to 65 gunners and 98 infantry was awarded the honour of “Royal” as had the Jersey and Guernsey Militias, being the 50th anniversary of the Battle of Jersey. The militia continued until after World War I. Concerns by the