author
1839–1892
A Union Army officer turned military historian, he wrote from direct experience and gave readers a detailed inside view of the Civil War’s Nineteenth Army Corps. His best-known work stands out for its close attention to campaigns, command decisions, and the soldiers who served in them.

by Richard B. (Richard Biddle) Irwin
Born in 1839, Richard Biddle Irwin served in the Union Army during the American Civil War and later became known for writing about the conflict. Records from the University of Michigan describe him as George McClellan’s aide-de-camp and later an assistant adjutant general in the Nineteenth Army Corps.
Irwin is best known for History of the Nineteenth Army Corps, published in 1892. Project Gutenberg identifies him as a former lieutenant colonel and assistant adjutant-general of the corps, which helps explain the book’s firsthand authority and its strong focus on military organization, campaigns, and leadership.
He died in 1892, the same year his major history appeared in print. For listeners interested in Civil War writing grounded in lived service, his work offers both a participant’s perspective and a careful historical record.