Question: Closing the Ring is a 2007 film directed by an English filmmaker who served in the film unit of of the Royal Air Force duing what war?

Context articles: Robert Leckie (RCAF officer)
Royal New Zealand Air Force
Arthur Tedder, 1st Baron Tedder
William Dickson (RAF officer)
Percy Lewis (boxer)
RAF Cottesmore
Richard Attenborough
Closing the Ring
No. 7010 Squadron RAF
Cecil Holmes (director)

Air Marshal Robert Leckie, (16 April 1890 – 31 March 1975) was an air officer in the Royal Air Force and the Chief of the Air Staff of the Royal Canadian Air Force from 1944 to 1947.
 He initially served in the Royal Naval Air Service during the First World War, becoming known as one of "the Zeppelin killers from Canada", after shooting down two airships.
 During the inter-war period he served as a Royal Air Force squadron and station commander, eventually becoming the RAF's Director of Training in 1935, and was Air Officer Commanding RAF Mediterranean from 1938 until after the beginning of the Second World War.
 In 1940 he returned to Canada where he was primarily responsible for the Commonwealth Air Training Plan, transferring to the Royal Canadian Air Force in 1942.
The Royal New Zealand Air Force (RNZAF) (Maori: "Te Tauaarangi o Aotearoa", "New Zealand Warriors of the Sky"; previously "Te Hokowhitu o Kahurangi", "War Party of the Blue") is the air force component of the New Zealand Defence Force.
 It was formed from New Zealand elements of the British Royal Air Force, becoming an independent force in 1923, although many RNZAF aircrew continued to serve in the Royal Air Force until the end of the 1940s.
 The RNZAF fought in World War II, Malaysia, Korean War, Vietnam and the Gulf War plus various United Nations peacekeeping missions.
 From a 1945 peak of over 1,000 combat aircraft the RNZAF has shrunk to a strength of around 51 aircraft in 2016, focusing on maritime patrol and transport duties in support of the Royal New Zealand Navy and the New Zealand Army.
 The RNZAF's air combat capability ended in 2001 with the disbanding of the A-4 Skyhawk squadrons.
 The Air Force is led by an air vice-marshal who holds the appointment of Chief of Air Force.
Marshal of the Royal Air Force Arthur William Tedder, 1st Baron Tedder, {'1': ", '2': ", '3': ", '4': "} (11 July 1890 – 3 June 1967) was a senior Royal Air Force commander.
 He was a pilot and squadron commander in the Royal Flying Corps in the First World War and he went on to serve as a senior officer in the Royal Air Force during the inter-war years when he served in Turkey, Great Britain and the Far East.
 During the Second World War, as Air Officer Commanding RAF Middle East Command, Tedder directed air operations in the Mediterranean and North Africa, including the evacuation of Crete and "Operation Crusader" in North Africa.
 His bombing tactics became known as the "Tedder Carpet".
 Later in the war Tedder took command of Mediterranean Air Command and in that role was closely involved in the planning of the Allied invasion of Sicily and then the Allied invasion of Italy.
 When Operation Overlord—the invasion of France—came to be planned, Tedder was appointed Deputy Supreme Commander at Supreme Headquarters Allied Expeditionary Force under General Eisenhower.
 After the war he served as Chief of the Air Staff, in which role he advocated increased recruiting in the face of many airmen leaving the service, doubled the size of RAF Fighter Command and implemented arrangements for the Berlin Airlift in 1948.
 After the war he held senior positions in business and academia.
Marshal of the Royal Air Force Sir William Forster Dickson, {'1': ", '2': ", '3': ", '4': "} (24 September 1898 – 12 September 1987) was a Royal Naval Air Service aviator during the First World War, a senior officer in the Royal Air Force during the inter-war years and a Royal Air Force commander during and after the Second World War.
 Dickson was Chief of the Air Staff in the mid-1950s, in which role his main preoccupation was the establishment of the V Force and the necessary supporting weapons, airfields and personnel.
 He also served as the first Chief of the Defence Staff in the late 1950s.
Percy Lewis ( (1927--) 31 1927 (age 89 ) ) is a Trinidad and Tobago/British amateur featherweight and professional feather/super feather/lightweight boxer of the 1950s and '60s who as an amateur was runner-up for the 1950 Amateur Boxing Association of England (ABAE) featherweight title, against Peter Brander (Slough Centre ABC), boxing out of The Royal Air Force, was runner-up for the 1951 Amateur Boxing Association of England (ABAE) featherweight title, against Jim Travers (Lansdowne BC), boxing out of The Royal Air Force, won the 1952 Amateur Boxing Association of England (ABAE) featherweight title, against Steve Trainer (Hulme Lads ABC), boxing out of The Royal Air Force, represented Great Britain at featherweight in the Boxing at the 1952 Summer Olympics, losing to Georghe Ilie of Romania, and won the 1953 Amateur Boxing Association of England (ABAE) featherweight title, against Alan Sillett (The British Army), boxing out of Oxford YMCA ABC, and as a professional won the British Empire featherweight title, his professional fighting weight varied from 124+1/2 lb , i.e. featherweight to 134 lb , i.e. lightweight, he served with the Royal Air Force.
Royal Air Force Station Cottesmore or more simply RAF Cottesmore is a former Royal Air Force station in Rutland, England, situated between Cottesmore and Market Overton.
 The station housed all the operational Harrier GR9 squadrons in the Royal Air Force, and No. 122 Expeditionary Air Wing.
 On 15 December 2009 it was announced that the station would close in 2013 as part of defence spending cuts, along with the retirement of the Harrier GR9 and the disbandment of Joint Force Harrier.
 However the formal closing ceremony took place on 31 March 2011 with the airfield becoming a satellite to RAF Wittering until March 2012.
Richard Samuel Attenborough, Baron Attenborough, {'1': ", '2': ", '3': ", '4': "} ( ; 29 August 1923 – 24 August 2014) was an English actor, filmmaker, entrepreneur, and politician.
 He was the President of the Royal Academy of Dramatic Art (RADA) and the British Academy of Film and Television Arts (BAFTA).
 Attenborough joined the Royal Air Force during World War II and served in the film unit.
 He went on several bombing raids over Europe and filmed action from the rear gunner's position.
Closing the Ring is a 2007 film directed by Richard Attenborough and starring Shirley MacLaine, Christopher Plummer, Mischa Barton, Stephen Amell, Neve Campbell, Pete Postlethwaite, and Brenda Fricker.
 It was the final film directed by then octogenarian Attenborough, who died seven years later.
No. 7010 (VR) Photographic Interpretation Squadron, Royal Auxiliary Air Force is a unit of the British Royal Air Force.
 It was founded in April 1953 as No. 7010 Flight, Royal Air Force Volunteer Reserve, to provide strategic imagery analysis support to the Royal Air Force.
 In 1965 the flight expanded its role to include tactical imagery analysis.
 In August 1982, Her Majesty The Queen approved the issue of a badge to the flight.
 In allusion to the unit's role, the emblem of a human eye is portrayed with a wing embellishment and set in front of a roundel.
 The motto "Vocati Veniemus" may be freely translated as "when summoned we shall be there".
 The collapse of the Warsaw Pact resulted in a large reduction of NATO forces in central Europe.
 In turn this has led to a major reduction in, and reorganisation of, the United Kingdom's regular and reserve forces.
 Within this overall plan for defence, No. 7010 Flight became No. 7010 (VR) Photographic Interpretation Squadron.
Cecil William Holmes (23 June 1921 – 24 August 1994) was a New Zealand-born film director and writer.
 He was born in Waipukurau, Hawke's Bay, New Zealand.
 He served in the Royal New Zealand Air Force and British Royal Navy during World War II before turning to filmmaking.
 He made a number of documentaries for the New Zealand National Film Unit then moved to Australia, where he directed several feature films and a number of documentaries for the Commonwealth Film Unit.