Haldimand Sumner Putnam was a brevet colonel in the Union Army during the American Civil War. He was killed at the Second Battle of Fort Wagner.
Putnam was born in Cornish, New Hampshire on October 15, 1835. He was the son of John L. Putnam, who was both a farmer and Judge of Probate for Sullivan County. Haldimand Putnam enrolled in the West Point Military Academy at the age of sixteen, and graduated in 1857 with high honors.
Source: Wikipedia