Battery Longstreet by Don Troiani. Just after noon September 17th 1862, the Battle of Antietam took a critical turn for Robert E. Lee’s Army of Northern Virginia. General James Longstreet saw the Union attackers were advancing fast; he summoned every piece of artillery to take up position in the Piper Farm apple orchard. After their cannoneers dropped, wounded or dead, Longstreet’s staff members dismounted and began working the pieces themselves. Shipping container dimensions shown above. Each print is signed and numbered. Image Dimensions are 20 X 26.3/4 inches. Price is 350.00 plus shipping.