Question: Mark Selby played guitar for the American country music singer who was part of what battle?

full_context: Document 1: Kenneth Bowra: Kenneth Bowra is a retired major general who served in the US Army from 1970 to 2003. Bowra saw service with US special forces in the Vietnam War and Cambodian Civil War and has worked with the Central Intelligence Agency and Joint Special Operations Command. He later fought in the US Invasion of Grenada and in the Somali Civil War and First Gulf War. In 1998 he was given command of the John F. Kennedy Special Warfare Center and School and in 2000 was deputy commander of NATO's Kosovo Force. Retiring in 2003 he is now a diplomat with the US State Department in Saudi Arabia.
Document 2: Mark Spencer (guitarist): Mark Spencer, (born September 28, 1957 in Champaign, Illinois) is an American guitarist, steel guitarist, engineer, multi-instrumentalist, and musician currently based in Brooklyn, New York. An original member of seminal alt-country band Blood Oranges, he continues to work as an in-demand band member and sideman with a diverse range of new and established musical artists. He is currently a member of the band Son Volt, and appears on their 2009 release American Central Dust as lap and pedal steel guitarist, keyboardist, background vocalist, and engineer.
Document 3: Tomas Young: Tomas Young (November 30, 1979 – November 10, 2014) was an American military veteran of the Iraq War. He was paralyzed by a bullet to the spine while deployed in Iraq. One of the first veterans to come out publicly against the war, he spent most of his life after the war protesting. Young's condition worsened due to various medical complications and he chose to go into hospice care, awaiting his death. He later reversed that decision.
Document 4: Gary Gordon: Gary Ivan Gordon (August 30, 1960 – October 3, 1993) was a master sergeant in the United States Army and a recipient of the Medal of Honor. At the time of his death, he was a non-commissioned officer in the United States Army's premier special operations unit, the 1st Special Forces Operational Detachment-Delta (1SFOD-D), or "Delta Force". Together with his comrade, Sergeant First Class Randy Shughart, Gordon was posthumously awarded the Medal of Honor for actions he performed during the Battle of Mogadishu in October 1993.
Document 5: Mark Tinley: Mark Ty-Wharton (born Mark Tinley; 18 March 1963) is a British music technologist, informal logician and public speaker who specialises in presentations using sound art. He is best known for his work as a guitarist, programmer, sound engineer and record producer with Adamski, Duran Duran, TV Mania, Gary Numan, Glenn Gregory, The Dandy Warhols and others.
Document 6: Bill Caswell: Bill Caswell is a country music singer-songwriter and musician active since the early 1980s. Together with his wife Rosi Caswell, the duo from Bartlesville, Oklahoma perform on rare old style instruments including the ukelin, mandolin-guitar, bell-harp, and tremeloa. In the 1980s he performed his music on television in "Hee Haw" and on live radio in "A Prairie Home Companion". The two together performed at Dollywood in Gatlinburg, Tennessee for five seasons.
Document 7: Mark Selby (musician): Mark Otis Selby (1960/1961 – September 18, 2017) was an American blues rock singer-songwriter, guitarist, multi-instrumentalist, and record producer. Born in Enid, Oklahoma, he was a solo artist, signed to ZYX Records in Europe, and one half of performing duo with his wife, songwriter Tia Sillers. He also plays guitar in recording sessions for musical artists such as Kenny Rogers, Johnny Reid, Keni Thomas, Jimmy Hall, and Wynonna Judd.
Document 8: Michael D. Steele: Michael Dane Steele is a retired Colonel of the United States Army. He was a company commander in the 3rd Battalion, 75th Ranger Regiment during the Somalia mission Operation Gothic Serpent, which resulted in the now famous book and movie "Black Hawk Down", where he was portrayed by actor Jason Isaacs. He briefly appears in the documentary "I Am an American Soldier".
Document 9: Hargus &quot;Pig&quot; Robbins: Hargus Melvin "Pig" Robbins (born January 18, 1938, in Spring City, Tennessee) is an American session keyboard, and piano player. Having played on records for artists such as Dolly Parton, Connie Smith, Patti Page, Loretta Lynn, Kenny Rogers, George Jones, Bob Dylan, Neil Young, John Hartford, Ween, Alan Jackson, Merle Haggard, Roger Miller, David Allan Coe, Moe Bandy, George Hamilton IV, Sturgill Simpson, and Conway Twitty, he played on Roger Miller's Grammy Award-winning "Dang Me" in 1964. He is blind, having lost his sight at age four due to an accident involving his father's knife.
Document 10: Ike Turner: Izear Luster "Ike" Turner, Jr. (November 5, 1931 – December 12, 2007) was an American musician, bandleader, songwriter, arranger, talent scout, and record producer. An early pioneer of fifties rock and roll, he is most popularly known for his work in the 1960s and 1970s with his then-wife Tina Turner in the Ike & Tina Turner Revue.
Document 11: Melvin Endsley: Melvin Endsley (30 January 1934 – 16 August 2004) was a musician, singer, and songwriter best known for writing the song "Singing the Blues", along with over 400 songs recorded by hundreds of artists since 1956. Some of the artists that have recorded his songs include Johnny Cash, Marty Robbins, Andy Williams, Paul McCartney, Stonewall Jackson, and Ricky Skaggs. At the beginning of his career, Endsley recorded including RCA and MGM, however, his vocal recordings were commercially unsuccessful. In 1998, he was inducted into the Arkansas Entertainers Hall of Fame.
Document 12: Keni Thomas: Keni Thomas is an American country music singer and former United States Army Ranger. Thomas was a member of Task Force Ranger as a part of Operation Restore Hope in Somalia, and served in the Battle of Mogadishu. Thomas works as a motivational speaker drawing from this experience as a US Ranger.
Document 13: Claude AnShin Thomas: Claude Anshin Thomas (born 1947) is an American Zen Buddhist monk and Vietnam War veteran. He is an international speaker, teacher and writer, and an advocate of non-violence. Thomas was brought to Buddhism by Vietnamese Zen Buddhist teacher Thich Nhat Hanh, and was ordained in 1995 by Tetsugen Bernard Glassman of the Zen Peacemaker Order. Thomas teaches Buddhist meditation practice and dharma to the public through social projects, talks, and retreats. Since 1994, Thomas has walked 19000 mi on peace pilgrimages throughout Europe, Asia, the Middle East, and the United States. While walking, Thomas carries no money, and begs for food and shelter in the mendicant monk tradition. He is the author of "At Hell's Gate: A Soldier's Journey from War to Peace" (2004) and founder of the Zaltho Foundation, a nonprofit organization dedicated to ending violence.
Document 14: Stephen J. Townsend: Stephen J. Townsend is a United States Army officer who currently commands Combined Joint Task Force – Operation Inherent Resolve and the XVIII Airborne Corps. Townsend served with the 82nd Airborne Division, the 7th Infantry Division, the 75th Ranger Regiment, the 78th Infantry Division, and the 10th Mountain Division. He fought in Operation Urgent Fury, Operation Just Cause, and Operation Uphold Democracy. With the 10th Mountain Division, he served in the War in Afghanistan, leading a task force in Operation Anaconda. Townsend became commander of the 3rd Stryker Brigade Combat Team, leading it in the Battle of Baqubah in the Iraq War. Townsend became commander of the 10th Mountain Division in the War in Afghanistan. In May 2015 he became commander of XVIII Airborne Corps, and in late August 2016 took command of the Combined Joint Task Force – Operation Inherent Resolve.
Document 15: Jimmie Selph: Jimmie Selph (June 23, 1915 – December 28, 2000), born James Coin Self, was a versatile American country music, rockabilly and bluegrass musician and occasional vocalist whose career peaked during the late 1940s–1950s. He played guitar, drums, accordion, and steel guitar. His names are occasionally seen professionally as variously Jimmy and/or Self.
ground_truth: Battle of Mogadishu