October 2, 2009
The Thirteenth Regiment Illinois Infantry was organized on April 21, 1861, and mustered into Union service on May 24. The regiment arrived in Arkansas shortly after the 1862 Battle of Pea Ridge. Assigned to General Samuel Curtiss army, the regiment is shown here after arriving in Helena (Phillips County). The regiment participated in the Battle of Arkansas Post in early 1863 before moving east of the Mississippi River for the duration of the war.