|Born||November 27, 1829
Center Harbor, New Hampshire
|Allegiance||United States of America
|Service/branch||United States Army
|Years of service||1846 – 1849 and
1861 – 1865
American Civil War
|Awards||Brevet Brigadier General|
Chamberlain was born in Center Harbor, New Hampshire and soon afterward moved to Boston, where he spent most of his childhood. In 1844 at age 15, he left home without permission to go to Illinois. Two years later he was to join the Illinois Second Volunteer Regiment, then headed to Texas for the Mexican–American War. In San Antonio Chamberlain joined the regular army and became part of the First United States Dragoons. He fought at the Battle of Buena Vista and several other operations in the Mexican-American War. In 1849 he was found to be a deserter when he returned home to Boston to raise a family.
Samuel Chamberlain was also involved in some less savory aspects of the Texas/Mexico border disputes. Most notably, he rode with the infamous Glanton gang, under the command of John Glanton, and was involved in the taking of scalps under highly questionable circumstances to claim bounties from Mexican authorities for raiding Indians.
In the Civil War
During the Civil War, after being chief of staff to Brigadier General William W. Averell and Lieutenant Colonel of the 1st Massachusetts Volunteer Cavalry Regiment, Chamberlain commanded Camp Parole at Annapolis, Maryland for a time and also commanded the Fifth Massachusetts Volunteer Cavalry Regiment, an all African American unit, with the rank of colonel. He was wounded on six different occasions. On February 24, 1865, President Abraham Lincoln nominated Chamberlain for the award of the honorary grade of brevet brigadier general, U.S. Volunteers, to rank from February 24, 1865, and the U.S. Senate confirmed the award on March 3, 1865. Chamberlain was mustered out of the U.S.Volunteers on September 16, 1865.
After the war, Chamberlain was warden of state prisons in Massachusetts and Connecticut.
After settling in Massachusetts with his family, Chamberlain became well known for his charming paintings, which consist largely of landscapes and battle scenes concerning the Mexican-American war. A large collection is held at the San Jacinto Museum of History. Chamberlain is also the author of a harrowing account of his early adventures entitled My Confession: The Recollections of a Rogue. It was the primary source for author Cormac McCarthy's 1985 novel Blood Meridian. 
Chamberlain died on November 10, 1908 in Worcester, Massachusetts.
- Eicher, John H. and Eicher, David J., Civil War High Commands, p. 169. Stanford University Press, Stanford, CA, 2001. ISBN 0-8047-3641-3.
- Eicher and Eicher, 2001, p. 742
- Eicher and Eicher, 2001, p. 169
- Hunt, Roger D. and Brown, Jack R., Brevet Brigadier Generals in Blue, p. 206. Gaithersburg, MD: Olde Soldier Books, Inc., 1990. ISBN 1-56013-002-4.
- Good Reads https://www.goodreads.com/book/show/1094401.My_Confession. Retrieved 22 August 2015. Missing or empty
- Chamberlain, Samuel E.: "My Confession: Recollections of a Rogue"; ed. WH Goetzmann. Grimes, William
- Eicher, John H. and Eicher, David J., Civil War High Commands. Stanford University Press, Stanford, CA, 2001. ISBN 0-8047-3641-3.
- Goetzmann, William H.: "Sam Chamberlain's Mexican War: The San Jacinto Museum of History Paintings"
- "William H. Goetzmann, Pulitzer-Winning Historian, Dies at 80", The New York Times, September 11, 2010. Retrieved 2010-09-12.
- Hunt, Roger D. and Brown, Jack R., Brevet Brigadier Generals in Blue. Gaithersburg, MD: Olde Soldier Books, Inc., 1990. ISBN 1-56013-002-4.
Hanging of the San Patricios
The Great Western as Landlady, a portrait of Sarah A. Bowman
Sam in his old age, recalling the Mexican War
|Wikimedia Commons has media related to Samuel Chamberlain.|
- Images of the U.S.-Mexican War — Sam Chamberlain's Mexican War Watercolor Paintings
- Samuel E. Chamberlain's My Confession from Texas State Historical Association
- part 1 of Chamberlain's account .pp.68–91
- Part 2 of Chamberlain's account .pp.52–74
- Part 3 of Chamberlain's account .pp.64–83; epilogue.p.86
- .p.9-10 Letters written by Chamberlain