paragraph_text: Lecointe Island is an elongated island, long between Cape Kaiser and Hvarchil Point, wide and high, separated from the east coast of Brabant Island by Pampa Passage, in the Palmer Archipelago, Antarctica.

paragraph_text: Brigadier Sir Otho Leslie Prior-Palmer, DSO (28 October 1897 – 29 January 1986) was an Anglo-Irish British Army officer and Conservative Party politician. He served for nearly twenty years as a Member of Parliament for Worthing. His main contributions were on the subject of defence, on which he was sometimes roused to outspoken criticism of the opposition Labour Party.

paragraph_text: The île de Nantes (Island of Nantes) is an island located in the centre of the city of Nantes, France, surrounded by two branches of the Loire River - the "bras de la Madeleine" (branch of the Madeleine) at the north and the "bras de Pirmil" (branch of Pirmil) at the south. It is one of the eleven neighbourhoods of Nantes.

paragraph_text: Lobodon Island is an island lying east of Wauters Point, Two Hummock Island, in the Palmer Archipelago, Antarctica. It was photographed by the Falkland Islands and Dependencies Aerial Survey Expedition in December 1956, and was named by the UK Antarctic Place-Names Committee in 1960 after "Lobodon carcinophagus", the crabeater seal.

paragraph_text: 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.

paragraph_text: Cape Grönland () is a cape on the east side of the entrance to Gerritsz Bay which forms the northern extremity of Anvers Island, in the Palmer Archipelago, Antarctica.

paragraph_text: The Robertson Islands or Robertsons Islands are a group of islands extending 6 km southward of the south-eastern extremity of Coronation Island in the South Orkney Islands of Antarctica. They were discovered and roughly charted by Captains George Powell and Nathaniel Palmer in December 1821 and named by James Weddell in 1823.

paragraph_text: Manoury Island is an island lying south of Gand Island at the north end of Schollaert Channel, in the Palmer Archipelago, Antarctica. It was discovered by the French Antarctic Expedition, 1903–05, and named by Jean-Baptiste Charcot for G. Manoury, secretary of the expedition.

paragraph_text: Cape Kaiser () is the north end of Lecointe Island, lying just east of Brabant Island in the Palmer Archipelago, Antarctica. It was discovered by the Belgian Antarctic Expedition, 1897–99, under Gerlache, and named by him for a supporter of the expedition.

paragraph_text: Hamburg Bay () is a bay indenting the northwest coast of Anvers Island in the Palmer Archipelago, Antarctica immediately south of Bonnier Point, Obitel Peninsula. Emen Island and Petrelik Island are located in the southwest part of the bay.

paragraph_text: Drift Fence is a 1936 American film directed by Otho Lovering. The film is also known as Texas Desperadoes (American reissue title).

paragraph_text: Cape Monaco () is a cape which forms the southwest tip of Anvers Island, in the Palmer Archipelago, Antarctica. Gossler Islands and Chukovezer Island are lying respectively 3 km west and 7.2 km north of the cape.

paragraph_text: The Eritrean Air Force (ERAF) is the official aerial warfare service branch of the Eritrean Defence Forces and is one of the three official uniformed military branches of the State of Eritrea.

paragraph_text: Goetschy Island is a low rocky island lying near the middle of Peltier Channel in the Palmer Archipelago, Antarctica. It was first charted and named by the French Antarctic Expedition, 1903–05, under Jean-Baptiste Charcot.

paragraph_text: Tignish-Palmer Road is a provincial electoral district for the Legislative Assembly of Prince Edward Island, Canada. It was formerly Tignish-DeBlois from 1996 to 2007.

paragraph_text: Jacobs Island is a narrow island long between the Hellerman Rocks and Laggard Island, off the southwest coast of Anvers Island, Antarctica. It was named by the Advisory Committee on Antarctic Names for U.S. Navy Lieutenant Commander Paul F. Jacobs, Officer-in-Charge of Palmer Station in 1972.

paragraph_text: Arthur Harbour () is a small harbour entered between Bonaparte Point and Amsler Island on the south-west coast of Anvers Island in the Palmer Archipelago of Antarctica.

paragraph_text: Dream Island is an island lying south-east of Cape Monaco, off the south-west coast of Anvers Island in Wylie Bay, in the Palmer Archipelago of Antarctica. It was surveyed by the British Naval Hydrographic Survey Unit in 1956-1957 and named by the UK Antarctic Place-Names Committee for its natural features including a cave and, in summer, a small waterfall, with mossy patches and grass. It lies about 10 km north-west of the United States' Palmer Station.

paragraph_text: Litchfield Island is a rocky island long and rising to , lying in Arthur Harbour, south of Norsel Point, off the south-west coast of Anvers Island in the Palmer Archipelago of Antarctica.

paragraph_text: Jurien Island is a small island lying north of Cape Leguillou, the northern tip of Tower Island, in the Palmer Archipelago, Antarctica. The island was first charted and named by Captain Jules Dumont d'Urville on March 4, 1838.

Question: When did the military branch that Otho Prior-Palmer belonged to invade St. Barthelemy?
Answer: 1773