Abner Doubleday, the often credited (although incorrect) founder of American baseball, was a Union General during the Civil War. When Fort Sumter was fired upon by Confederate forces, Doubleday commanded the battery that fired the initial round in defense of the outpost. When Maj. Gen. John Reynolds was killed on first day of the Battle of Gettysburg, Doubleday assumed command of I Corps. It was his spirited retreat through the town against a numerically superior force that enabled Union forces to prepare strong fortifications along Cemetery Ridge. After the war, he obtained one of the patents on the San Francisco cable car system that is still used today.
His gravesite in Arlington is marked by a polished granite obelisk atop a rough hewed base. His name and rank are on a bronze plaque affixed to the front face. Another plaque listing his significant military campaigns is mounted on the rear of the headstone.