Question: When did the military branch Frederick Fitzwygram served in start wearing khaki?

full_context: Document 1: Service Dress (British Army): Service Dress was the new style of khaki service dress uniform introduced by the British Army for use in the field from the early 1900s, following the experiences of a number of imperial wars and conflicts, including the Second Boer War. This variant of uniform continues to be worn today, although only in a formal role, as No. 2 Pattern dress.
Document 2: Fred Waite (politician): Born in Dunedin, Waite was a farmer at the outbreak of the First World War. He joined the New Zealand Expeditionary Force (NZEF) and served in the Gallipoli Campaign, during which he received the Distinguished Service Order. He was evacuated from Gallipoli due to sickness and repatriated to New Zealand, where he saw out the war as an instructor in NZEF training camps. He wrote a history of New Zealand's military efforts during the Gallipoli Campaign that was published in 1919. He returned to his farm and soon became involved in politics, joining the Reform Party. In 1925 he was elected Member of Parliament for the Clutha electorate, serving two terms. He was appointed to the Legislative Council in 1934. During the Second World War, Waite was overseas commissioner for the National Patriotic Fund Board and was appointed an Officer of the Order of the British Empire for his services in this role. Two years later he was appointed a Companion of the Order of St Michael and St George. He died in 1952 at the age of 67.
Document 3: Navy blue: Navy blue got its name from the dark blue (contrasted with white) worn by officers in the British Royal Navy since 1748 and subsequently adopted by other navies around the world. When this color name, taken from the usual color of the uniforms of sailors, originally came into use in the early 19th century, it was initially called "marine blue", but the name of the color soon changed to "navy blue".
Document 4: Lord George Wellesley: Wellesley was educated at Wellington College, Berkshire. He was Managing Director of Coxeter and Son plc. He was commissioned a second lieutenant (on probation) in the Grenadier Guards on 3 February 1909 and was confirmed in his rank on 1 February 1911. He was promoted to lieutenant on 15 September 1912, and was appointed a flying officer in the Royal Flying Corps (RFC) on 30 June 1914. He was promoted to flight commander on 11 December 1914, with the temporary rank of captain, and was appointed an instructor at the Central Flying School of the RFC on 19 December. He fought in the First World War between 1914 and 1918, where he was mentioned in despatches in June 1916. He was appointed a squadron commander on 1 July 1916, with the permanent rank of captain and the temporary rank of major. He was decorated with the Military Cross in 1916.
Document 5: Uniforms of the United States Navy: The Navy first authorized a khaki uniform in 1913 as a practical garment for early naval aviators; they were given permission to wear Marine Corps khaki uniforms with naval insignia, when flying or working on aircraft. Khakis were authorized aboard submarines in 1931 and as a working uniform on all ships ten years later.
Document 6: Sir John Fuller, 1st Baronet: Fuller was the eldest son of George Fuller, of Neston Park, Corsham, Wiltshire, and his wife Emily Georgina Jane, daughter of Sir Michael Hicks Beach, 8th Baronet, and was educated at Winchester and Christ Church, Oxford. He unsuccessfully contested Parliament three times but in 1900 he was successfully returned for Westbury. He served under Sir Henry Campbell-Bannerman as a Junior Lord of the Treasury from 1906 to 1907 and under Campbell-Bannerman and later H. H. Asquith as Vice-Chamberlain of the Household from 1907 to 1911. He was created a Baronet, of Neston Park in Corsham in the County of Wiltshire, in 1910. The following year Fuller resigned his seat in the House of Commons on his appointment as Governor of Victoria. He remained in this position until his resignation for health and family reasons in November 1913. He had been made a Knight Commander of the Order of St Michael and St George (KCMG) in the 1911 Coronation Honours.
Document 7: Frederick Fryer: He served in the Second Boer War and the First World War, commanding his regiment and two mounted brigades. In later life he became a Deputy Lieutenant of Dorset and a Justice of the Peace.
Document 8: Frederick Fitzwygram: Lieutenant-General Sir Frederick Wellington John Fitzwygram, 4th Baronet (29 August 1823 – 9 December 1904) was a British Army cavalry officer, expert on horses and Conservative politician.
Document 9: Francis Fane (soldier): Colonel Francis Augustus Fane (1824–1893,) was an English officer in the British Army who raised the Peshawar Light Horse during the Indian Mutiny. Fane was also a noted traveller, diarist, artist as well as in later years a successful banker.
Document 10: John Tyson Wigan: Brigadier-General John Tyson Wigan, (July 1877 – November 1952) was a senior British Army officer and later a Conservative Party politician. He served with the Desert Mounted Corps during World War I, and was wounded in action three times during campaigning at the Battle of Gallipoli and during the Sinai and Palestine Campaign. He had previously been badly wounded in the Second Boer War.
Document 11: Red coat (military uniform): Red coat or Redcoat is a historical item of military clothing used widely, though not exclusively worn, by most regiments of the British Army from the 17th to the 20th centuries. From the mid-17th century to the 19th century, the uniform of most British soldiers (apart from artillery, rifles and light cavalry) included a madder red coat or coatee. From 1873 onwards, the more vivid shade of scarlet was adopted for all ranks, having previously been worn only by officers, sergeants and all ranks of some cavalry regiments.
Document 12: British Army during the Second World War: The pre-war British Army was trained and equipped to be a small, mechanised, professional army. Its main function was to garrison the British Empire. It became evident early in the war that its initial structure and manpower was woefully unprepared and ill - equipped for a war with multiple enemies on multiple fronts. The British Army, an all - volunteer force until 1939, was small in comparison to its enemies at the start of the Second World War in 1939, as it had been in the First World War. By the end of the Second World War, however, over 3.5 million men had served in the British Army.
Document 13: Eton College: The long-standing claim that the present uniform was first worn as mourning for the death of George III is unfounded. "Eton dress" has undergone significant changes since its standardisation in the 19th century. Originally (along with a top-hat and walking-cane), Etonian dress was reserved for formal occasions, but boys wear it today for classes, which are referred to as "divisions", or "divs". As stated above, King's Scholars wear a black gown over the top of their tailcoats, and occasionally a surplice in Chapel. Members of the teaching staff (known as Beaks) are required to wear a form of school dress when teaching.
Document 14: Henry Lowry-Corry (1845–1927): Colonel Henry William Lowry-Corry DL, JP (30 June 1845 – 6 May 1927), styled The Honourable from birth, was a British Army officer and Conservative politician.
Document 15: United States Air Force: The first USAF dress uniform, in 1947, was dubbed and patented "Uxbridge Blue" after "Uxbridge 1683 Blue", developed at the former Bachman-Uxbridge Worsted Company. The current Service Dress Uniform, which was adopted in 1993 and standardized in 1995, consists of a three-button, pocketless coat, similar to that of a men's "sport jacket" (with silver "U.S." pins on the lapels, with a silver ring surrounding on those of enlisted members), matching trousers, and either a service cap or flight cap, all in Shade 1620, "Air Force Blue" (a darker purplish-blue). This is worn with a light blue shirt (Shade 1550) and Shade 1620 herringbone patterned necktie. Enlisted members wear sleeve insignia on both the jacket and shirt, while officers wear metal rank insignia pinned onto the coat, and Air Force Blue slide-on epaulet loops on the shirt. USAF personnel assigned to Base Honor Guard duties wear, for certain occasions, a modified version of the standard service dress uniform, but with silver trim on the sleeves and trousers, with the addition of a ceremonial belt (if necessary), wheel cap with silver trim and Hap Arnold Device, and a silver aiguillette placed on the left shoulder seam and all devices and accoutrement.
ground_truth: early 1900s
sub_queries: Frederick Fitzwygram >> military branch Answer: British Army
when did British Army start wearing khaki Answer: early 1900s