John Watts de Peyster

John Watts de Peyster, Sr.
Born	(1821-03-09)March 9, 1821 New York, New York, U.S.
Died	May 4, 1907(1907-05-04) (aged 86) New York, New York, U.S.
Allegiance	United States
Service / branch	New York State Militia
Years of service	1845–1866
Rank	Brevet Major-General
Battles / wars	Mexican–American War American Civil War
Spouse(s)	Estelle Livingston
Children	John Watts de Peyster, Jr. (son)
Other work	Historian, lawyer, writer

John Watts de Peyster, Sr. (March 9, 1821 – May 4, 1907)^[1] was an American author on the art of war, philanthropist, and the Adjutant General of New York.^[2] He served in the New York State Militia during the Mexican–American War and American Civil War. He was one of the first military critics and noted for his histories of the Revolutionary and Civil Wars, and also published works of drama, poetry, military history, military biography and military criticism.^[3]