Arkansas was admitted to the Union on June 15, 1836. The state seceded on May 6, 1861, and was admitted to the Confederacy on May 18, 1861. When Little Rock, the state capital, was captured on September 10, 1863, the state government relocated to Washington, Arkansas, and a Union government was installed in its place, causing an overlap in the terms of Confederate governor Harris Flanagin and Union governor Isaac Murphy. During the post-war Reconstruction period, it was part of the Fourth Military District. Arkansas was readmitted to the Union on June 22, 1868.