Samuel P. Heintzelman

Samuel Peter Heintzelman
Samuel P. Heintzelman
Born	(1805-09-30)September 30, 1805 Manheim, Pennsylvania
Died	May 1, 1880(1880-05-01) (aged 74) Washington, D.C.
Place of burial	Forest Lawn Cemetery, Buffalo, New York
Allegiance	United States of America
Service/branch	United States Army Union Army
Years of service	1826–1869
Rank	Major General
Commands held	III Corps XXII Corps
Battles/wars	Seminole War Mexican-American War Battle of Huamantla Yuma War Battle of Coyote Canyon Battle of the Gila River Cortina Troubles Battle of La Ebonal Battle of Rio Grande City American Civil War First Battle of Bull Run Peninsula Campaign
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Samuel Peter Heintzelman (September 30, 1805 – May 1, 1880) was a United States Army General. He served in the Seminole War, the Mexican-American War, the Yuma War and the Cortina Troubles. During the American Civil War he was a prominent figure in the early months of the war rising to the command of a corps.

Heintzelman was born in Manheim, Pennsylvania, to Peter and Ann Elizabeth Grubb Heintzelman. He graduated from the United States Military Academy in 1826 and was commissioned a brevet second lieutenant in the 3rd U.S. Infantry, July 1, 1826, then in the 2nd U.S. Infantry and served on the Northern frontier at Fort Gratiot, Fort Mackinac, and Fort Brady. On March 4, 1833, he was promoted to first lieutenant and served on quartermaster's duty in Florida during the Second Seminole War. On July 7, 1838, he was appointed captain in the Quartermaster's Department, remaining in Florida until the close of the war in 1842. In 1847, during the Mexican-American War, he joined General Winfield Scott's army in Mexico, taking part in several engagements, for which he was appointed brevet major on October 9, 1847. In 1848-49 he accompanied his regiment around Cape Horn to California, and for several years served in California and the Arizona Territory.