Murfreesboro is a city in and county seat of Rutherford County, Tennessee, United States. The population was 152,769 according to the 2020 census, up from 108,755 residents certified in 2010. Murfreesboro is located in the Nashville metropolitan area of Middle Tennessee, 34 miles (55 km) southeast of downtown Nashville.

Serving as the state capital from 1818 to 1826, it was superseded by Nashville. Today, it is the largest suburb of Nashville and the sixth-largest city in Tennessee. The city is both the center of population and the geographic center of Tennessee.

Since the 1990s, Murfreesboro has been Tennessee's fastest-growing major city and one of the fastest-growing cities in the country. Murfreesboro is home to Middle Tennessee State University, the largest undergraduate university in the state of Tennessee, with 22,729 total students as of fall 2014.

The Battle of Stones River, also known as the Second Battle of Murfreesboro, was a battle fought from December 31, 1862, to January 2, 1863, in Middle Tennessee, as the culmination of the Stones River Campaign in the Western Theater of the American Civil War. Of the major battles of the war, Stones River had the highest percentage of casualties on both sides. Although the battle itself was inconclusive, the Union Army's repulse of two Confederate attacks and the subsequent Confederate withdrawal were a much-needed boost to Union morale after the defeat at the Battle of Fredericksburg, and it dashed Confederate aspirations for control of Middle Tennessee.

Union Maj. Gen. William S. Rosecrans's Army of the Cumberland marched from Nashville, Tennessee, on December 26, 1862, to challenge General Braxton Bragg's Army of Tennessee at Murfreesboro. On December 31, each army commander planned to attack his opponent's right flank, but Bragg struck first. A massive assault by the corps of Maj. Gen. William J. Hardee, followed by that of Leonidas Polk, overran the wing commanded by Maj. Gen. Alexander M. McCook. A stout defense by the division of Brig. Gen. Philip Sheridan in the right center of the line prevented a total collapse, and the Union assumed a tight defensive position backing up to the Nashville Turnpike. Repeated Confederate attacks were repulsed from this concentrated line, most notably in the cedar "Round Forest" salient against the brigade of Col. William B. Hazen. Bragg attempted to continue the assault with the division of Maj. Gen. John C. Breckinridge, but the troops were slow in arriving and their multiple piecemeal attacks failed.

Fighting resumed on January 2, 1863, when Bragg ordered Breckinridge to assault the well-fortified Union position on a hill to the east of the Stones River. Faced with overwhelming artillery, the Confederates were repulsed with heavy losses. Falsely believing that Rosecrans was receiving reinforcements, Bragg chose to withdraw his army on January 3 to Tullahoma, Tennessee. This caused Bragg to lose the confidence of the Army of Tennessee.