India, June 27 -- Modern-day Gettysburg, Pennsylvania, is a quaint and peaceful town, filled with preserved examples of colonial-era architecture and surrounded by serene woodlands. It's so picture-perfect, it's hard to believe that one of the bloodiest chapters in American history once played out here.

Gettysburg has earned enduring fame for the bloody three-day Civil War battle that took place in the fields and woods surrounding the town in 1863. Widely viewed as the war's turning point, the Battle of Gettysburg started on July 1 and concluded on July 3 with tens of thousands of casualties across both Union and Confederate forces. Months later, President Abraham Lincoln would return to the battlefields to give his famous address recog...