The Battle of Fredericksburg unfolded from December 11 to 15 in 1862, marking one of the darkest moments for the Union Army during the American Civil War. Confederate General Robert E. Lee commanded the Army of Northern Virginia, holding a strong defensive position on Marye's Heights in Fredericksburg, Virginia. Major General Ambrose Burnside, leading the Union Army of the Potomac, sought to dislodge the Confederates and seize the advantageous heights. The weather conditions were poor, hampering troop movements and logistics for the Union forces. On December 13, Burnside ordered multiple frontal assaults against fortified Confederate positions, which were met with fierce resistance.The attack began early in the morning, with Union troops storming against the well-entrenched Confederate defenders. Many were unaware of the steep terrain and thick stone wall that served as a formidable barricade for the Confederates. Union soldiers faced devastating musket and artillery fire as they charged uphill, resulting in catastrophic losses. By the day's end, the Union forces suffered approximately 12,600 casualties, while the Confederates lost around 5,300 men. This striking imbalance of casualties showcased the effectiveness of Lee's defensive strategies and the vulnerabilities of Burnside's command. The battle ended with a conclusive Confederate victory, solidifying Lee's reputation as a formidable military leader. The aftermath influenced the plans and morale of both armies in subsequent confrontations throughout the war.