paragraph_text: The United States Air Force (USAF) is the aerial warfare service branch of the United States Armed Forces and one of the seven American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on 18 September 1947 under the National Security Act of 1947. It is the most recent branch of the U.S. military to be formed, and is the largest and one of the world's most technologically advanced air forces. The USAF articulates its core functions as Nuclear Deterrence Operations, Special Operations, Air Superiority, Global Integrated ISR, Space Superiority, Command and Control, Cyberspace Superiority, Personnel Recovery, Global Precision Attack, Building Partnerships, Rapid Global Mobility and Agile Combat Support.

paragraph_text: Johnny Reno is a 1966 American western film made by A.C. Lyles Productions and released by Paramount Pictures. It starred Dana Andrews and Jane Russell. It was directed by R.G. Springsteen, produced by A.C. Lyles, with a screenplay by Andrew Craddock, Steve Fisher and A.C. Lyles.

paragraph_text: The Eritrean Air Force (ERAF) is the official aerial warfare service branch of the Eritrean Defence Forces and is one of the three official uniformed military branches of the State of Eritrea.

paragraph_text: In the same war, the Prussian Edward Schnell served the Aizu domain as a military instructor and procurer of weapons. He was granted the Japanese name Hiramatsu Buhei (平松武兵衛), which inverted the characters of the daimyo's name Matsudaira. Hiramatsu (Schnell) was given the right to wear swords, as well as a residence in the castle town of Wakamatsu, a Japanese wife, and retainers. In many contemporary references, he is portrayed wearing a Japanese kimono, overcoat, and swords, with Western riding trousers and boots.

paragraph_text: The American Hockey League, the top minor league in North America required all players to wear a visor prior to the start of the 2006 -- 07 season. The NHL ``strongly recommends ''the use of visors. The NHL mandated visors in 2013, with an exception for players having 25 games experience.

paragraph_text: Bikini Barbershop (Also known as Bikini Barbershop: Jersey) is an American reality show on AXS TV featuring Jeff Wulkan, a man who runs a hair salon/barber shop in Long Branch, New Jersey called "Bikini Barbers". It mainly consists of female hair stylists, at work, wearing only bikinis. Following Hurricane Sandy, a drop in business forced the closure of the shop.

paragraph_text: Season of Miracles is a 2013 American Christian-themed dramatic film directed by Dave Moody and starring John Schneider, Grayson Russell, Andrew Williams, and Nancy Stafford. Based on writer Rusty Whitener's award-winning novel "A Season of Miracles", the story is set in Alabama during the 1970s and follows a group of twelve-year-olds and their championship little league baseball season.

paragraph_text: 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.

paragraph_text: Howard Russell Butler (March 3, 1856 – Princeton, NJ. May 20, 1934) was an American painter and founder of the American Fine Arts Society. Butler also persuaded Andrew Carnegie to fund the construction of Carnegie Lake near Princeton University. Butler also designed a mansion, an astronomy hall and painted a solar eclipse for the U.S. Naval Observatory.

paragraph_text: Charles Andrew "'Andy" Russell (born October 29, 1941) is a former American football linebacker who played his entire 12-year National Football League (NFL) career for the Pittsburgh Steelers. He played college football for, and earned a degree in economics from, the University of Missouri.

paragraph_text: The video for the song, considered by many to be a definitive music video for Aerosmith, starts off with the band walking up to a department store elevator, and an attractive woman (Brandi Brandt) says ``2nd floor... hardware, children's wear, lady's lingerie. Oh, good morning Mr. Tyler, going down? ''Steven Tyler enters the elevator and the song starts.

paragraph_text: With Bill Russell, the Celtics advanced to the 1957 NBA Finals and defeated the St. Louis Hawks in seven games, giving the Celtics the first of their record 17 championships. Russell went on to win 11 championships, making him the most decorated player in NBA history. In 1958, the Celtics again advanced to the NBA Finals, this time losing to the Hawks in 6 games. However, with the acquisition of K.C. Jones that year, the Celtics began a dynasty that would last for more than a decade. In 1959, the Celtics won the NBA Championship after sweeping the Minneapolis Lakers, the first of their record eight consecutive championships. During that time, the Celtics met the Lakers in the Finals five times, starting an intense and often bitter rivalry that has spanned generations. In 1964, the Celtics became the first NBA team to have an all African - American starting lineup. On December 26, 1964, Willie Naulls replaced an injured Tommy Heinsohn, joining Tom 'Satch' Sanders, K.C. Jones, Sam Jones, and Bill Russell in the starting lineup. The Celtics defeated St. Louis 97 -- 84. Boston won its next 11 games with Naulls starting in place of Heinsohn. The Celtics of the late - 1950s -- 1960s are widely considered as one of the most dominant teams of all time.

paragraph_text: From 1879, Watch Tower supporters gathered as autonomous congregations to study the Bible topically. Thirty congregations were founded, and during 1879 and 1880, Russell visited each to provide the format he recommended for conducting meetings. As congregations continued to form during Russell's ministry, they each remained self-administrative, functioning under the congregationalist style of church governance. In 1881, Zion's Watch Tower Tract Society was presided over by William Henry Conley, and in 1884, Charles Taze Russell incorporated the society as a non-profit business to distribute tracts and Bibles. By about 1900, Russell had organized thousands of part- and full-time colporteurs, and was appointing foreign missionaries and establishing branch offices. By the 1910s, Russell's organization maintained nearly a hundred "pilgrims," or traveling preachers. Russell engaged in significant global publishing efforts during his ministry, and by 1912, he was the most distributed Christian author in the United States.

paragraph_text: The USAF is the only branch of the U.S. military where NCO status is achieved when an enlisted person reaches the pay grade of E-5. In all other branches, NCO status is generally achieved at the pay grade of E-4 (e.g., a Corporal in the Army and Marine Corps, Petty Officer Third Class in the Navy and Coast Guard). The Air Force mirrored the Army from 1976 to 1991 with an E-4 being either a Senior Airman wearing three stripes without a star or a Sergeant (referred to as "Buck Sergeant"), which was noted by the presence of the central star and considered an NCO. Despite not being an NCO, a Senior Airman who has completed Airman Leadership School can be a supervisor according to the AFI 36-2618.

paragraph_text: Donald Russell Long (August 27, 1939 – June 30, 1966) was a United States Army soldier and a recipient of America's highest military decoration—the Medal of Honor—for his actions in the Vietnam War.

paragraph_text: Baldwin Valley () is an ice-filled valley in the Saint Johns Range, lying northwest of Pond Peak in Victoria Land of Antarctica. It was named by the Advisory Committee on Antarctic Names for Russel R. Baldwin, U.S. Navy, who was in charge of the Airfield Maintenance Branch at McMurdo Station in 1962.

paragraph_text: Lieutenant-Colonel Andrew Hamilton Russell (1812–1900) was a British Army officer. He was appointed to the New Zealand Legislative Council from 1861 to 1872, and was Minister of Native Affairs (as the Minister of Māori Affairs was then called) from 1865 to 1866 in the Stafford Ministry.

paragraph_text: Russell A. Buchanan (January 24, 1900 – December 6, 2006) was, at age 106, one of the last surviving American veterans of the First World War. He was born in Cambridge, Massachusetts, and died in Watertown, Massachusetts. In 1918, Buchanan enlisted in the United States Navy at age 18. Russell stayed in the military long enough to have served in the Second World War, however, he retired from service in 1943 (i.e. after 25 years of service), and died at almost age 107 from a stroke.

paragraph_text: With Roots Above and Branches Below is the third studio album by American melodic metalcore band The Devil Wears Prada, released on May 5, 2009, through Ferret Music. It charted at No. 11 on the "Billboard" 200, selling 31,000 in its first week.

paragraph_text: 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.

Question: When did Andrew Russell's military branch start wearing khaki?
Answer: early 1900s