Question: When did the military branch that Arthur Bliss served in invade the island?

full_context: Document 1: Saint Barthélemy: Saint-Barthélemy has a marine nature reserve, known as the Reserve Naturelle that covers 1.200 ha, and is divided into 5 zones all around the island to form a network of protected areas. The Reserve includes the bays of Grand Cul de Sac, Colombier, Marigot, Petit Cul de Sac, Petite Anse as well as waters around offshore rocks such as Les Gross Islets, Pain de Sucre, Tortue and Forchue. The Reserve is designed to protect the islands coral reefs, seagrass and endangered marine species including sea turtles. The Reserve has two levels of protection, the yellow zones of protection where certain non-extractive activities, like snorkeling and boating, are allowed and the red zones of high protection where most activities including SCUBA are restricted in order to protect or recover marine life. Anchoring is prohibited in the Reserve and mooring buoys are in place in some of the protected bays like Colombier
Document 2: Laird Bell: Bell received a KBE knighthood for his war-time activities on behalf of British War Relief. Following the war, he then played an active part, for a private citizen, in creating the New Europe. Bell returned to Germany as a legal adviser to Brigadier General William H. Draper. Jr., Head of the Economics Division, in General Lucius Clay's U.S. Military Government in Germany OMGUS. Draper's group brokered US interests in post-war German corporations. In 1945 and 1946, Bell "stalked the corridors of Foggy Bottom" in a "one-man crusade against 1067" a US rule that proposed a "barbarous" dismantling of Germany. As president of the Alumni Association of Harvard University in June 1947 Laird Bell organized the commencement speeches where Secretary of State George Marshall launched the European Recovery Plan. (General Omar Bradley was the main speaker that day).
Document 3: Philip Bridger Proctor: Philip Bridger Proctor KBE (1870 - 3 December 1940) was Director of Meat Supplies, Ministry of Food, 1919–21. He was knighted in 1920. He was educated at St Paul's School. He married Nellie Eliza Shaul in 1897; they had one daughter and a son.
Document 4: Alistair Darling: Alistair Darling was born in London the son of a civil engineer, Thomas, and his wife, Anna MacLean. He is the great-nephew of Sir William Darling, a Conservative/Unionist Member of Parliament for Edinburgh South (1945–1957) who had served as Lord Provost of Edinburgh during the Second World War. He was educated at Chinthurst School, in Tadworth, Surrey, then in Kirkcaldy, and at the private Loretto School, in Musselburgh. He attended the University of Aberdeen, from where he graduated as a Bachelor of Laws (LL.B). He became the President of Aberdeen University Students' Representative Council.
Document 5: Saint Barthélemy: Marine mammals are many, such as the dolphins, porpoises and whales, which are seen here during the migration period from December till May. Turtles are a common sight along the coastline of the island. They are a protected species and in the endangered list. It is stated that it will take 15–50 years for this species to attain reproductive age. Though they live in the sea, the females come to the shore to lay eggs and are protected by private societies. Three species of turtles are particularly notable. These are: The leatherback sea turtles which have leather skin instead of a shell and are the largest of the type found here, some times measuring a much as 3 m (average is about 1.5 m) and weighing about 450 kg (jellyfish is their favourite diet); the hawksbill turtles, which have hawk-like beaks and found near reefs, generally about 90 cm in diameter and weigh about 60 kg and their diet consists of crabs and snails; and the green turtles, herbivores which have rounded heads, generally about 90 cm in diameter and live amidst tall sea grasses.
Document 6: Nigel Tranter: Nigel Tranter was born in Glasgow and educated at George Heriot's School in Edinburgh. He trained as an accountant and worked in Scottish National Insurance Company, founded by his uncle. In 1933, he married May Jean Campbell Grieve and had two children, Frances May and Philip. He joined the Royal Artillery and served in East Anglia in the Second World War.
Document 7: Norfolk Island: Norfolk Island has 174 native plants; 51 of them are endemic. At least 18 of the endemic species are rare or threatened. The Norfolk Island palm (Rhopalostylis baueri) and the smooth tree-fern (Cyathea brownii), the tallest tree-fern in the world, are common in the Norfolk Island National Park but rare elsewhere on the island. Before European colonization, most of Norfolk Island was covered with subtropical rain forest, the canopy of which was made of Araucaria heterophylla (Norfolk Island pine) in exposed areas, and the palm Rhopalostylis baueri and tree ferns Cyathea brownii and C. australis in moister protected areas. The understory was thick with lianas and ferns covering the forest floor. Only one small tract (5 km2) of rainforest remains, which was declared as the Norfolk Island National Park in 1986.
Document 8: William Spence: William Guthrie Spence (7 August 1846 – 13 December 1926), Australian trade union leader and politician, played a leading role in the formation of both Australia's largest union, the Australian Workers' Union, and the Australian Labor Party.
Document 9: Wilfrid Spender: Sir Wilfrid Bliss Spender (6 October 1876 – 21 December 1960) was a British Army officer, colonial administrator and civil servant who helped re-organise the Ulster Volunteers (UVF) into the Ulster Special Constabulary and was responsible for laying the foundations for the civil service of Northern Ireland. He served as Secretary to the government of Northern Ireland from 1921-1925 and Permanent Secretary to the Ministry of Finance from 1925-1944. He was knighted in 1929. His wife, Lady Spender (née Alice Lilian Dean; 1880-1966), was a member of the UVF Nursing Corps and worked in the Ulster Division Comforts Fund during World War I. Later in life Spender became a noted diarist.
Document 10: Harriet Spicer: She lived in Chelsea prior to attending Lillsden School for Girls and then Benenden School. In 1968 she spent some time working for Richard Branson's "Student" magazine. She went on to graduate from St Anne's College, Oxford University.
Document 11: Saint Barthélemy: Agricultural production on the island is difficult given the dry and rocky terrain, but the early settlers managed to produce vegetables, cotton, pineapples, salt, bananas and also fishing. Sweet potato is also grown in patches. The islanders developed commerce through the port of Gustavia. Duty-free port attractions, retail trade, high-end tourism (mostly from North America) and its luxury hotels and villas have increased the island's prosperity, reflected in the high standard of living of its citizens.
Document 12: Legends of the coco de mer: Nut and tree of the coco de mer, a rare species of palm tree native to the Seychelles archipelago in the Indian Ocean, is the subject of various legends and lore. Coco de mer is endemic to the Seychelles islands of Praslin and Curieuse. Before the Seychelles were discovered and settled, nuts of this species were sometimes carried by the ocean currents to distant shores, such as those of the Maldives, where the tree was unknown. These floating nuts did not germinate. The exceptional size and suggestive form of the nut, the circumstances of its discovery, and some unusual qualities of the trees have given rise to several legends.
Document 13: Saint Barthélemy: Other trees of note include the royal palm, sea grape trees in the form of shrubs on the beaches and as 5 to 7 m trees in the interior areas of the island, aloe or aloe vera (brought from the Mediterranean), the night blooming cereus, mamillaria nivosa, yellow prickly pear or barbary fig which was planted as barbed wire defences against invading British army in 1773, Mexican cactus, stapelia gigantea, golden trumpet or yellow bell which was originally from South America, bougainvillea and others.
Document 14: Saint Barthélemy: As the terrain is generally arid, the hills have mostly poor soil and support only cacti and succulent plants. During the rainy season the area turns green with vegetation and grass. The eastern part of the island is greener as it receives more rainfall. A 1994 survey has revealed several hundred indigenous species of plants including the naturalized varieties of flora; some growing in irrigated areas while the dry areas are dominated by the cacti variety. Sea grapes and palm trees are a common sight with mangroves and shrubs surviving in the saline coastal swamps. Coconut palm was brought to the island from the Pacific islands. Important plants noted on the island are:
Document 15: Wilfrid Wills: The son of a Director of Wills Tobacco, he was born at Bromley, Kent and educated at Cheltenham College and the Royal Military College, Sandhurst. He served in both World Wars: as an Officer in the 5th Dragoon Guards from 1916 to 1919; and as a Lieutenant-Commander in the Royal Naval Volunteer (Wireless) Reserve from 1939 to 1945.
ground_truth: 1773
sub_queries: Arthur Bliss >> military branch Answer: British Army
When did British Army invade the island? Answer: 1773