Daniel Ludlow Thompson was born in Windham, Ohio on August 28, 1837 and was educated at the Flushing Institute in Flushing, Long Island, where he became a faculty member.In August of 1862, he enlised in the Ninth New York Volunteer Infantry, Company G (also known as Hawkins' Zouaves), and was later transferred to the Third New York Volunteer Infantry, Company B. During his war service, Thompson saw action in the Peninsular Campaign, the Battle of Antietam, and the siege of Charleston. He was taken as a prisoner of war by the Confederate troops after Antietam and was held at Libby Prison in Richmond, Virginia for 18 days before being exchanged. In 1863, he spent time in an army hospital in Portsmouth, Virginia. Thompson was honorably discharged from military service on June 17, 1865 and died on March 31, 1926.
From the description of The Daniel Ludlow Thompson Papers, 1862-1961 (bulk 1862-1865). (New York University). WorldCat record id: 479322855