Question: George Boscawen, 9th Viscount Falmouth is a former officer in which regiment of the British Army ?

full_context: Document 1: Swiss Guards: Swiss Guards (French: "Gardes Suisses" ; German: "Schweizergarde" ) are the Swiss soldiers who have served as guards at foreign European courts since the late 15th century.
Document 2: Bossom baronets: The Bossom Baronetcy, of Maidstone in the County of Kent, is a title in the Baronetage of the United Kingdom. It was created on 4 July 1953 for the architect and Conservative Member of Parliament for Maidstone, Alfred Bossom. In 1960 he was further honoured when he was created a life peer as Baron Bossom, "of Maidstone in the County of Kent". The life peerage became extinct on his death in 1965 while he was succeeded in the baronetcy by his second but only surviving son, the second holder of the baronetcy. He was a former Conservative Member of Parliament for Leominster.
Document 3: Coldstream Guards: The Coldstream Guards (COLDM GDS) is a part of the Guards Division, Foot Guards regiments of the British Army.
Document 4: 1st (United Kingdom) Division: The 1st (United Kingdom) Division, formerly the 1st Armoured Division, is a division of the British Army, currently the only British division to be stationed in Germany. Originally formed in November 1937 as the Mobile Division, it saw extensive service during World War II and was disbanded afterwards; reconstituted in 1976, it remains in service. It should not be confused with the 1st Infantry Division, which saw service in World War II as a separate formation.
Document 5: Royal Guards (Sweden): The Royal Guards (Swedish: "Högvakten" ), the Main Guard at the Stockholm Palace is carried out by units of the Swedish Armed Forces. It is the King of Sweden's guard of honour and is responsible for the protection of the Swedish Royal Family. The Royal Guard is normally divided in two parts, the main guard stationed at the Stockholm Palace, and a smaller detachment at Drottningholm Palace. The Royal Guard traces its history back to the early 16th Century, and the unit has continuously guarded the Royal Palace in Stockholm since 1523.
Document 6: Evelyn Boscawen, 7th Viscount Falmouth: Major General Evelyn Edward Thomas Boscawen, 7th Viscount Falmouth, (24 July 1847 – 1 October 1918) was a British peer and British Army officer.
Document 7: George Boscawen, 3rd Viscount Falmouth: George Boscawen, 3rd Viscount Falmouth, PC (6 May 1758 – 11 February 1808), was a British army officer and statesman of the late 18th and early 19th centuries. His career included service as Captain of the Honourable Corps of Gentlemen-at-Arms during the reign of George III.
Document 8: Earl of Falmouth: The title of Earl of Falmouth has been created twice, once in the Peerage of England and the second time in the Peerage of the United Kingdom. The first creation, on 17 March 1664, was for Charles Berkeley, 1st Viscount Fitzhardinge, who was at the same time created Baron Botetourt of Langport. It became extinct upon his death the following year. The second creation, on 14 July 1821, was for Edward Boscawen, 4th Viscount Falmouth. It became extinct in 1852.
Document 9: Royal Corps of Halberdiers: The Royal Corps of Halberdiers is a fictional British regiment from Evelyn Waugh's "Sword of Honour" trilogy. In the novel, the regiment is described as being composed of four battalions: The 1st (Regular Infantry) 2nd (Territorial Army), 3rd (Commandos), and 4th (Militia). The Corps is derived from Waugh's own experiences in the Royal Marines throughout World War II.
Document 10: George Boscawen, 9th Viscount Falmouth: George Hugh Boscawen, 9th Viscount Falmouth, DL (born 31 October 1919) is a Cornish peer and landowner. His subsidiary titles include Baron Le Despencer (created 1264) and Baron Boscawen-Rose. A former officer in the Coldstream Guards, he was Lord Lieutenant of Cornwall from 1977 to 1994.
Document 11: Guard Hussar Regiment (Denmark): The Guard Hussar Regiment (Danish: "Gardehusarregimentet, GHR" ) is a special cavalry unit of the Royal Danish Army, the primary task is to train the Guard Hussars for various functions in the mobilisation force. The Guard Hussars are one of two active cavalry regiments of the Danish Army, and was formed in 2001 through the amalgamation of the original Guard Hussars regiment, Zealand Life Regiment and Danish Life Regiment
Document 12: George Boscawen (British Army officer, born 1712): Lieutenant-General George Boscawen (1 December 1712 – 3 May 1775) was a British Army officer and politician, the fourth son of Hugh Boscawen, 1st Viscount Falmouth.
Document 13: Saudi Royal Guard Regiment: The Saudi Arabian Royal Guard Regiment (Arabic: الحرس الملكي السعودي‎ ‎ Al-Ḥars al-Malakī as-Suʿūdī) is a unit in the Saudi Arabian Army. Originally an independent military force, the Royal Guards were incorporated into the Army in 1964. However, the Royal Guards still retained their unique mission of protecting the House of Saud. Units of the Royal Guard protect the King of Saudi Arabia at all times.
Document 14: Baron St Levan: Baron St Levan, of St Michael's Mount in the County of Cornwall, is a title in the Peerage of the United Kingdom. It was created on 4 July 1887 for the former Member of Parliament Sir John St Aubyn, 2nd Baronet. He had previously represented Cornwall West in House of Commons as a Liberal and St Ives as a Liberal Unionist. He was succeeded by his eldest son, the second Baron. He was a Colonel and Honorary Brigadier-General in the Grenadier Guards. On his death the titles passed to his nephew, the third Baron. He was the son of the Hon. Sir Arthur James Dudley Stuart St Aubyn (1867–1897), second son of the first Baron. The third baron was succeeded in 1978 by his eldest son, the fourth baron. Before inheriting the peerage the fourth baron served with the Royal Navy at Dunkirk and in a minesweeper in Arctic Convoys during World War II and was awarded the Distinguished Service Cross (DSC). As of 2014, the titles are held by the latter's nephew, the fifth Baron, who succeeded in 2013.
Document 15: Baron Berkeley of Stratton: Baron Berkeley of Stratton, in the County of Cornwall, was a title in the Peerage of England. It was created in 1658 for John Berkeley, 1st Baron Berkeley of Stratton, a Royalist supporter during the English Civil War, of the Bruton branch of the Berkeley family. He was a descendant of Sir Maurice de Berkeley (14th century), younger son of Maurice de Berkeley, 2nd Baron Berkeley (see Baron Berkeley). Charles Berkeley, 2nd Viscount Fitzhardinge, was his brother and Charles Berkeley, 1st Earl of Falmouth, his nephew. Lord Berkeley of Stratton's second son, the third Baron (who succeeded his elder brother), was an Admiral in the Royal Navy. He died without surviving children and was succeeded by his younger brother, the fourth Baron. He was a politician and served as First Lord of Trade between 1714 and 1715. On his death the title passed to his eldest son, the fifth Baron. He was also a politician and held office as Captain of the Yeomen of the Guard and Captain of the Honourable Corps of Gentlemen-Pensioners. He was childless and the title became extinct on his death in 1775.
ground_truth: the Guards Division, Foot Guards regiments