This is the Civil War memoirs of Major Charles Swett called "A Brief Narrative of Warren Light Artillery". Charles of Warren County, Mississippi led the "Warren Light Artillery Battery" (also called "Swett's Battery") into battle at Farmington, Shiloh, Chickamauga, and 16 other campaigns.

http://www.genealogy.com/users/s/w/e/Mike-Sweet-/FILE/0010page.html

Also, to view photos of Charles & the "Swett's Battery" Flag, and read more about Charles in "Swetts of Mississippi", go to

http://www.genealogy.com/users/s/w/e/Mike-Sweet-/