The marker for the Right of the Army of Northern Virginia is on South Confederate Avenue. (39.784311°N, 77.252079° W; Google map; Tour map: South Confederate Avenue)
The marker shows the location of the extreme right flank of the Confederate Army of Northern Virginia at the beginning of the attack on July 2nd. The Confederate line extended in a six mile horseshoe (sometimes described as a fishhook) back up Confederate Avenue, curving through the town of Gettysburg, east around Culp’s Hill, and south to the area around Spangler’s Springs. The tips of the left and right flanks were less than three miles apart, with most of Meade’s army inside the loop.
Although there was some danger of the Confederates closing the horseshoe and cutting off the Union line of retreat or even surrounding Meade’s army, it was very unlikely. Meade had the larger army, and was able to post elements of his 6th Corps in reserve along Baltimore Pike and behind Big Round Top to cover his lines of communication.
Instead, the position was to Meade’s advantage. He was able to post reserves in the center of the fishhook that could quickly reach threatened areas, or bring reinforcements from an unengaged part of his line, and he did both during the battle.
From the marker:
Right of the Army