Maj. Gen. Samuel P. Heintzelman
Born: September 30, 1805
Manheim, Pennsylvania
Died: May 1, 1880
Washington, D.C.
1826: West Point Graduate
1826: Brevet 2nd Lieutenant
July 7, 1838: Captain
October 9, 1847: Brevet Major
1855: Brevet Lieutenant Colonel
1861: Colonel
May 1861: Brigadier General of Volunteers
May 5, 1862: Major General
Brig. Gen. Samuel P. Heintzelman
1826: West Point Graduate - Brevet 2nd Lieutenant in 3rd U.S. Infantry
2nd U.S. Infantry - served in the frontier
Second Seminole War
July 7, 1838: Appointed Captain in Quartermaster Department remaining in Florida with 2nd Infantry until 1842
Mexican/American War
October 9, 1847: Appointed Brevet Major
1848-1849: Traveled with his regiment around Cape Horn to California where he served in California and Arizona Territory
December 1851-1855: Yuma War
1855: Brevet Lieutenant Colonel
1859: First Cortina War - largely responsible for defeating Juan Cortina's forces
1861: Promoted to Colonel of 11th U.S. Infantry
May 1861: Brigadier General of Volunteers
July 21, 1861: 1st Battle of Bull Run - wounded in the knee
November 12, 1861: Led 2nd Michigan Infantry for the raid ransacking and devastation of Pohick Church in Lorton, Virginia
March 1862: Received command of III Corps in the Army of the Potomac
April 5-May 4, 1862: Siege of Yorktown - along with division commander Gen. Fitz John Porter to use Union Army Balloon Corps
May 4-5, 1862: Battle of Williamsburg
May 31-June 1, 1862: Battle of Fair Oaks
June 25, 1862: Battle of Oak Grove
June 30, 1862: Battle of White Oak Swamp
After the Seven Days Battles, was promoted to Major General, effective May 5, 1862
August 29-30, 1862: 2nd Battle of Bull Run - Corps received heavy casualties
September 4, 1862: Relieved from command being judged too old
Spent the rest of the war commanding the Washington defenses
1865: At the end of the war, tank converted back to Colonel
February 22, 1869: Retired and was granted a promotion to major general for pension
Boatner, Mark M. III. The Civil War Dictionary. New York: David McKay, 1967. p 392
Samuel P. Heintzelman. 13 January 2020. web. 10 April 2020
Warner, Ezra J. Generals in Blue Lives of the Union Commanders. Baton Rouge: Louisiana State, 1964. p 227-228