Final answer:
The Battle of Gettysburg was fought in Gettysburg, Adams County, Pennsylvania from July 1-3, 1863. It featured a failed assault known as Pickett's Charge and resulted in the highest number of casualties in the Civil War.
Step-by-step explanation:
The Battle of Gettysburg was a pivotal engagement in the American Civil War, fought from July 1-3, 1863. It took place in Gettysburg, Adams County, Pennsylvania and was the farthest north that the Confederate army advanced into Union territory. Under the command of General Robert E. Lee, the Confederate Army of Northern Virginia clashed with the Union's Army of the Potomac, led by Major General George Gordon Meade.
The battle involved a massive confrontation between approximately 75,000 Confederate troops and 85,000 Union troops and culminated in a failed offensive by Lee known as Pickett's Charge. This marked the high point of the Confederacy's push into the North and resulted in severe casualties, with about 23,000 Union soldiers and 28,000 Confederate soldiers killed, wounded, or missing. Gettysburg stands as the battle with the most overall casualties in the Civil War and is notably associated with President Abraham Lincoln's Gettysburg Address, which he delivered months later at the dedication of the Soldiers' National Cemetery.