By petition of Rockville's citizens, the Maryland General Assembly incorporated the village on March 10, 1860. During the American Civil War, General George B. McClellan stayed at the Beall Dawson house in 1862. In addition, General J.E.B. Stuart and an army of 8,000 Confederate cavalrymen marched through and occupied Rockville on June 28, 1863, while on their way to Gettysburg and stayed at the Prettyman house. Jubal Anderson Early had also crossed through Maryland on his way to and from his attack on Washington. In 1913, on the birthday of Jefferson Davis, the United Daughters of the Confederacy erected a statue near the Rockville courthouse dedicated to Confederate soldiers from Montgomery County. The monument was removed in 2017 as part of a wave of removals of Confederate monuments and memorials in response to the 2015 Charleston church shooting, and is now located in White's Ferry.