Marcus Reno

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Marcus Albert Reno
Marcus A. Reno
Born	(1834-11-15)November 15, 1834 Carrollton, Illinois, US
Died	March 30, 1889(1889-03-30) (aged 54) Washington, D.C., US
Allegiance	United States Union
Service/branch	United States Army Union Army
Years of service	1857–1880
Rank	Colonel Brevet Brigadier General
Unit	1st U.S. Cavalry Regiment 7th U.S. Cavalry Regiment
Commands held	12th Pennsylvania Cavalry Regiment
Battles/wars	Indian Wars American Civil War
Alma mater	United States Military Academy Class of 1857

Marcus Albert Reno (November 15, 1834 – March 30, 1889) was a United States career military officer who served in the American Civil War where he was a combatant in a number of major battles, and later under George Armstrong Custer in the Great Sioux War against the Lakota (Sioux) and Northern Cheyenne. Reno is most noted for his prominent role in the Battle of the Little Bighorn, where he did not support Custer's position on the battlefield, remaining instead in a defensive formation with his troops about 4 miles (6.4 km) away. This event has since been a longstanding subject of controversy regarding his command decisions in the course of one of the most infamous defeats in the history of the United States military.