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: Frederick Steele (January 14, 1819 – January 12, 1868) was a career military officer in the United States Army, serving as a major general in the Union Army during the American Civil War. He was most noted for his successful campaign to retake much of secessionist Arkansas for the Union cause.

paragraph_text: Major General Frederick Brian Mayes, CB, FRCS (born 24 August 1934) is a retired senior British Army officer. He was Director General of the Army Medical Services from 1993 to 1996.

paragraph_text: Hoot Owl is a town in Mayes County, Oklahoma, United States. As of the 2000 census, the town had a total population of zero (5 in 1990). By 2010, the population had risen to 4.

paragraph_text: Kenwood is an unincorporated community and census-designated place (CDP) in Delaware and Mayes counties, Oklahoma, United States. As of the 2010 census it had a population of 1,224.

paragraph_text: Frederick Edgar Ferguson (born August 18, 1939) is a former United States Army warrant officer and later officer, as well as a recipient of the United States military's highest decoration—the Medal of Honor—for his actions in the Vietnam War while a chief warrant officer 3.

paragraph_text: Margaret Maye (?-present), born in Poland, is a Polish-Canadian singer and performer in various musical genres. Her repertoire consists of early and modern music, opera, oratorio, operetta, music theatre, cabaret, and jazz. Maye studied singing, drama and dancing at the post-secondary Music Theatre School in Gdynia and the Music Academy in Wroclaw, Poland. She lives in Toronto, Ontario.

paragraph_text: Dennis Hart Mahan [məˈhæn] (April 2, 1802 – September 16, 1871) was a noted American military theorist, civil engineer and professor at the United States Military Academy at West Point from 1824-1871. He was the father of American naval historian and theorist Rear Admiral Alfred Thayer Mahan. Of his other four children, his son Frederick August Mahan also graduated from West Point in 1867.

paragraph_text: Wickliffe is a census-designated place (CDP) in Mayes County, Oklahoma, United States. The population was 99 at the 2000 census, but only 75 at the 2010 census, a drop of 25 percent.

paragraph_text: The AK-63 (also known in Hungarian military service as the AMM) is a Hungarian variant of the AKM assault rifle manufactured by the Fegyver- és Gépgyár (FÉG) state arms plant in Hungary. It is currently used by the Hungarian Ground Forces as its standard infantry weapon, and by most other branches of the Hungarian Defence Forces.

paragraph_text: After receiving feedback from users and incorporating the various design changes requested, including adapting the rifle for use with the heavier Belgian SS109 version of the 5.56×45mm round and improving reliability, the weapon system was accepted into service with the British Armed Forces in 1985 as the SA80. The SA80 family originally consisted of the L85A1 Rifle, the L86A1 Light Support Weapon (LSW), and L98A1 Cadet GP Rifle. The first weapons were issued in October 1985.

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: The Republic of China Military Police (ROCMP; ) is a military police body under the Ministry of National Defense of Taiwan (Republic of China). Unlike military police in many other countries, ROCMP is a separate branch of the ROC Armed Forces. ROCMP is responsible for protecting government leaders from assassination or capture, guarding Taiwan’s strategic facilities, and counterintelligence against enemy infiltrators, spies, and saboteurs.

paragraph_text: The SA80 is a British family of 5.56 × 45mm NATO small arms, all of which are selective fire, gas - operated assault rifle s. The L85 rifle variant of the SA80 family has been the standard issue service rifle of the British Armed Forces since 1987, replacing the L1A1 variant of the FN FAL. The first prototypes were created in 1976, with production ending in 1994. The A1 variant was significantly upgraded in the early 2000s by Heckler & Koch as the SA80A2 and remains in service as of 2017. In mid-2016 a prototype A3 variant was showcased which further improved on the weapon and is reportedly being considered to extend the out of service date beyond 2025.

paragraph_text: Her father, Margrave John Frederick of Brandenburg-Ansbach, belonged to a branch of the House of Hohenzollern and was the ruler of a small German state, the Principality of Ansbach. Caroline was orphaned at a young age and moved to the enlightened court of her guardians, King Frederick I and Queen Sophia Charlotte of Prussia. At the Prussian court, her previously limited education was widened, and she adopted the liberal outlook possessed by Sophia Charlotte, who became her good friend and whose views influenced Caroline all her life.

paragraph_text: Iron Post is a census-designated place (CDP) in Mayes County, Oklahoma, United States. The population was 117 at the 2000 census, but had declined to 92 in 2010, a loss of more than 21 percent.

paragraph_text: Dietzenbach station was established on 1 December 1898 together with the opening of the Offenbach-Bieber–Dietzenbach railway, a branch line of the Rodgau Railway (). From the beginning all passenger services on the line started here. Labourers and craftsmen used the line to commute to their jobs in Offenbach am Main and Frankfurt and local farmers benefited from having faster transportation to the markets of the major cities.

paragraph_text: Snake Creek is a census-designated place (CDP) in Mayes County, Oklahoma, United States. The population was 298 at the 2000 census.

paragraph_text: Mechanical analog computers started appearing in the first century and were later used in the medieval era for astronomical calculations. In World War II, mechanical analog computers were used for specialized military applications such as calculating torpedo aiming. During this time the first electronic digital computers were developed. Originally they were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).

paragraph_text: USS "Frederick Funston" (APA-89) was a that served with the US Navy during World War II. Before serving as a Navy APA, she had been the US Army transport USAT "Frederick Funston". After World War II, she was returned to the Army and operated as USAT "Frederick Funston". "Funston" was among the seventy-two ships transferred to the Navy's Military Sea Transportation Service (MSTS) in the 1 March 1950 group and placed in service as USNS "Frederick Funston" (T-AP-178).

Question: When did the military group joined by Frederick Mayes start using the sa80?
Answer: 1987