The waning days of 1862 marked a nadir in the fortunes of the Union. After major defeats at Fredericksburg in Virginia and Chickasaw Bayou in Mississippi, it fell to Maj. Gen. William S. Rosecrans and his Army of the Cumberland to secure a victory that would give military teeth to the Emancipation Proclamation set to take effect on January 1, 1863\. Rosecrans moved his army out of Nashville on the day after Christmas to Murfreesboro, met Gen. Braxton Bragg’s Army of Tennessee, and fought one of the largest and bloodiest battles of the war. The full campaign, with extensive new material and coverage, is the subject of Daniel Masters’ new Hell by the Acre: A Narrative History of the Stones River Campaign, November 1862-January 1863. The opposing armies, 44,000 men under Rosecrans and 37,000 under Bragg, locked bayonets on December 31, 1862, in some of the hardest fighting of the war. Bragg’s initial attack drove the Federals back nearly three miles, captured 29 cannons, and thousands of