Poison Springs Battleground State Park is an Arkansas state park located southeast of Bluff City. It commemorates the Battle of Poison Spring in the American Civil War, which was part of the 1864 Camden Expedition, an element of a Union Army initiative to gain control of Shreveport, Louisiana and get a foothold in Texas.In the battle, which was fought on April 18, 1864, Confederates and Choctaw Indians attacked and overcame a supply wagon of Union soldiers. The term "poison spring" arises from the apocryphal story that Confederate soldiers poisoned nearby springwater. The battle hastened the failure of the Camden expedition, but also gained notoriety for the slaughter of African-American Union soldiers from Kansas by the Confederate forces, which took no African-American prisoners.The site was listed on the National Register of Historic Places in 1969, and, with other sites, is part of the Camden Expedition Sites National Historic Landmark. It was declared part of the National Historic Landmark in 1994.
