Problem: Tedder was born the son of Sir Arthur John Tedder and Emily Charlotte Tedder (nee Bryson) at the Glenguin Distillery (now Glengoyne) in the Campsie Fells, north of Glasgow. His father was distinguished as the Commissioner of the Board of Customs who devised the old age pension scheme. His father's occupation meant that the young Tedder saw different parts of the British Isles, spending 1895 to 1898 in Lerwick on the Shetland Isles and 1899-1901 in Elgin, in the County of Moray. In 1902 the family moved to Croydon in Surrey and Tedder attended the Whitgift School until 1909, when he went up to the University of Cambridge.

Tedder was promoted to lieutenant in the Dorset Regiment on 14 October 1914, and arrived back in Britain in December. He was posted to a reserve unit at Wyke Regis on the Dorset coast where he seriously injured his knee in February. Following his injury Tedder was unable to carry out full infantry service and, although he briefly carried out duties at a base camp in Calais, he pressed for a transfer to the Royal Flying Corps.  In January 1916, Tedder was accepted into the Royal Flying Corps and he was asked to attend the No. 1 School of Aeronautics. in Reading. He was promoted to captain on 21 March 1916. In April he attended the Central Flying School where he learned to fly and gained his 'wings'. In June 1916, Tedder served as a pilot with No. 25 Squadron RFC flying the Bristol Scout C on the Western Front. On 9 August 1916, Tedder was given additional responsibilities as he was made a flight commander with 25 Squadron. The first day of 1917 saw Tedder promoted to major and appointed officer commanding No. 70 Squadron RFC. Tedder remained on the Western Front and his new squadron was equipped with the Sopwith 1 1/2  Strutter. He was awarded the Italian Silver Medal for Military Valour on 26 May 1917.  Tedder was appointed officer commanding No. 67 Squadron at RFC Shawbury on 25 June 1917 and became commander of the School of Navigation and Bomb Dropping in Egypt the following year. Another change soon followed and on 24 June 1918 Tedder was appointed officer commanding 38th Wing, also based in Egypt. He was promoted to the temporary rank of lieutenant colonel on 23 July 1918 (rank relinquished on 2 April 1919).

How did he hurt his knee?

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Question:
Daniel Milton Rooney (July 20, 1932 - April 13, 2017) was chairman of the Pittsburgh Steelers, an American football team in the National Football League (NFL), and son of the Steelers' founder, Art Rooney. Dan Rooney was elected to the Pro Football Hall of Fame in 2000 for his contributions to the game. He was credited with spearheading a requirement that NFL teams with head coach and general manager vacancies interview at least one minority candidate, which has become known as the "Rooney Rule". Rooney served as the United States Ambassador to Ireland, from July 2009 until his resignation in December 2012.
On March 17, 2009, President Obama announced he had nominated Rooney to become the next US ambassador to Ireland, citing the owner's longstanding support for Irish-American charitable causes. In 2008, Rooney gave $30,000 to a Democratic Party committee that aided Obama's campaign, according to CQ MoneyLine, a non-partisan group that tracks political contributions. According to David Lewis, a Vanderbilt University political scientist and the author of The Politics of Presidential Appointments, "giving coveted ambassadorships to political supporters is a relatively low-risk way for presidents to repay campaign debts."  Secretary of State Hillary Clinton swore him in as the new ambassador to Ireland on July 1, 2009. Ambassador Rooney presented his credentials to Irish President Mary McAleese on July 3, before making his first official speaking engagement at lunch hosted by the American Chamber of Commerce Ireland.  In an interview with The Irish Times in April 2011 Rooney mentioned that he would consider resigning his ambassadorship in order to campaign for Obama's re-election. However, in a prepared statement released after that interview was published Rooney stated, "I was asked what I could do to help [Obama] in the next election and I responded that the best thing I could do would be to help him campaign. Were I to do so, it would require my resignation as ambassador to Ireland. However, I am very pleased with my accomplishments to date and I intend to continue to carry out my duties." On December 14, 2012, he resigned as US Ambassador to Ireland and returned to Pittsburgh. He would eventually be replaced in June 2014 by Kevin O'Malley.  Rooney was the maternal great-uncle of actresses Kate Mara and her sister Rooney Mara.
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How was he involved in Politics?

Answer:
In 2008, Rooney gave $30,000 to a Democratic Party committee that aided Obama's campaign,