Question: Which military branch was the person a part of that the Sun supported in 1974?

full_context: Document 1: The Sun (United Kingdom): Politically, The Sun in the early Murdoch years, remained nominally Labour. It supported the Labour Party led by Harold Wilson in the 1970 General Election, with the headline "Why It Must Be Labour" but by February 1974 it was calling for a vote for the Conservative Party led by Edward Heath while suggesting that it might support a Labour Party led by James Callaghan or Roy Jenkins. In the October election an editorial asserted: "ALL our instincts are left rather than right and we would vote for any able politician who would describe himself as a Social Democrat."
Document 2: The Sun (United Kingdom): Politically, the paper's stance was less clear under Prime Minister Gordon Brown who succeeded Blair in June 2007. Its editorials were critical of many of Brown's policies and often more supportive of those of Conservative leader David Cameron. Rupert Murdoch, head of The Sun's parent company News Corporation, speaking at a 2007 meeting with the House of Lords Select Committee on Communications, which was investigating media ownership and the news, said that he acts as a "traditional proprietor". This means he exercises editorial control on major issues such as which political party to back in a general election or which policy to adopt on Europe.
Document 3: Ministry of Defence (United Kingdom): The MoD has since been regarded as a leader in elaborating the post-Cold War organising concept of "defence diplomacy". As a result of the Strategic Defence and Security Review 2010, Prime Minister David Cameron signed a 50-year treaty with French President Nicolas Sarkozy that would have the two countries co-operate intensively in military matters. The UK is establishing air and naval bases in the Persian Gulf, located in the UAE and Bahrain. A presence in Oman is also being considered.
Document 4: The Sun (United Kingdom): The Sun switched support to the Labour party on 18 March 1997, six weeks before the General Election victory which saw the New Labour leader Tony Blair become Prime Minister with a large parliamentary majority, despite the paper having attacked Blair and New Labour up to a month earlier. Its front page headline read THE SUN BACKS BLAIR and its front page editorial made clear that while it still opposed some New Labour policies, such as the Minimum Wage and Devolution, it believed Blair to be "the breath of fresh air this great country needs". John Major's Conservatives, it said, were "tired, divided and rudderless". Blair, who had radically altered his party's image and policies, noting the influence the paper could have over its readers' political thinking, had courted it (and Murdoch) for some time by granting exclusive interviews and writing columns.
Document 5: Heath ministry: Edward Heath of the Conservative Party formed the Heath ministry and was appointed Prime Minister of the United Kingdom by Queen Elizabeth II on 19 June 1970, following the 18 June general election. Heath's ministry ended after the February 1974 general election, which produced a hung parliament, leading to the formation of a minority government by Harold Wilson of the Labour Party.
Document 6: Ministry of Defence (United Kingdom): The Ministers and Chiefs of the Defence Staff are supported by a number of civilian, scientific and professional military advisors. The Permanent Under-Secretary of State for Defence (generally known as the Permanent Secretary) is the senior civil servant at the MoD. His or her role is to ensure the MoD operates effectively as a department of the government.
Document 7: The Sun (United Kingdom): Despite its initial opposition to the closures, until 1997, the newspaper repeatedly called for the implementation of further Thatcherite policies, such as Royal Mail privatisation,[verification needed] and social security cutbacks, with leaders such as "Peter Lilley is right, we can't carry on like this",[verification needed] The paper showed hostility to the EU and approval of public spending cuts, tax cuts, and promotion of right-wing ministers to the cabinet, with leaders such as "More of the Redwood, not Deadwood".
Document 8: Dudley Smith: Smith served as a junior minister for the British Army and Employment during the Edward Heath government of 1970 to 1974.
Document 9: The Sun (United Kingdom): These years included what was called "spectacularly malicious coverage" of the Labour Party by The Sun and other newspapers. During the general election of 1983 The Sun ran a front page featuring an unflattering photograph of Michael Foot, then aged almost 70, claiming he was unfit to be Prime Minister on grounds of his age, appearance and policies, alongside the headline "Do You Really Want This Old Fool To Run Britain?" A year later, in 1984, The Sun made clear its enthusiastic support for the re-election of Ronald Reagan as president in the USA. Reagan was two weeks off his 74th birthday when he started his second term, in January 1985.
Document 10: Ministry of Defence (United Kingdom): From 1946 to 1964 five Departments of State did the work of the modern Ministry of Defence: the Admiralty, the War Office, the Air Ministry, the Ministry of Aviation, and an earlier form of the Ministry of Defence. These departments merged in 1964; the defence functions of the Ministry of Aviation Supply merged into the Ministry of Defence in 1971.
Document 11: Ministry of Defence (United Kingdom): Winston Churchill, on forming his government in 1940, created the office of Minister of Defence to exercise ministerial control over the Chiefs of Staff Committee and to co-ordinate defence matters. The post was held by the Prime Minister of the day until Clement Attlee's government introduced the Ministry of Defence Act of 1946. The new ministry was headed by a Minister of Defence who possessed a seat in the Cabinet. The three existing service Ministers—the Secretary of State for War, the First Lord of the Admiralty, and the Secretary of State for Air—remained in direct operational control of their respective services, but ceased to attend Cabinet.
Document 12: Comprehensive school: In 1970 Margaret Thatcher became Secretary of State for Education of the new Conservative government. She ended the compulsion on local authorities to convert, however, many local authorities were so far down the path that it would have been prohibitively expensive to attempt to reverse the process, and more comprehensive schools were established under Mrs Thatcher than any other education secretary.
Document 13: Brown ministry: Gordon Brown formed the Brown ministry after being invited by Queen Elizabeth II to begin a new government following the resignation of the previous Prime Minister of the United Kingdom, Tony Blair, on 27 June 2007. He took office as Prime Minister, a title he would hold until his resignation on 11 May 2010. In his inaugural cabinet, Brown appointed the United Kingdom's first female Home Secretary, Jacqui Smith.
Document 14: The Sun (United Kingdom): The Sun, during the Miners' strike of 1984–85, supported the police and the Thatcher government against the striking NUM miners, and in particular the union's president, Arthur Scargill. On 23 May 1984, The Sun prepared a front page with the headline "Mine Führer" and a photograph of Scargill with his arm in the air, a pose which made him look as though he was giving a Nazi salute. The print workers at The Sun refused to print it. The Sun strongly supported the April 1986 bombing of Libya by the US, which was launched from British bases. Several civilians were killed during the bombing. Their leader was "Right Ron, Right Maggie". That year, Labour MP Clare Short attempted in vain to persuade Parliament to outlaw the pictures on Page Three and gained opprobrium from the newspaper for her stand.
Document 15: The Sun (United Kingdom): The Sun remained loyal to Thatcher right up to her resignation in November 1990, despite the party's fall in popularity over the previous year following the introduction of the Poll tax (officially known as the Community Charge). This change to the way local government is funded was vociferously supported by the newspaper, despite widespread opposition, (some from Conservative MPs), which is seen as having contributed to Thatcher's own downfall. The tax was quickly repealed by her successor John Major, whom The Sun initially supported enthusiastically, believing he was a radical Thatcherite – despite the economy having entered recession at this time.
ground_truth: British Army
sub_queries: Who did the Sun support in 1974? Answer: Edward Heath
Edward Heath >> military branch Answer: British Army