Fort Pulaski National Monument is located on Cockspur Island between Savannah and Tybee Island, Georgia. It preserves Fort Pulaski; during the American Civil War, the Union Army successfully tested rifled cannon in combat in 1862 there, the success of which rendered brick fortifications obsolete. The fort was also used as a prisoner-of-war camp. The National Monument includes most of Cockspur Island (containing the fort) and all of the adjacent McQueens Island. Construction After the War of 1812, US President James Madison ordered a new system of coastal fortifications to protect the United States from a foreign invasion. Construction of a fort to protect the port of Savannah began in 1829 under the direction of Major General Babcock and later Second Lieutenant Robert E. Lee, a recent graduate of West Point. The new fort would be on Cockspur Island, at the mouth of the Savannah River. In 1833, the facility was named Fort Pulaski in honor of Casimir Pulaski, a Polish soldier and military commander who fought during the American Revolution under the command of George Washington. Pulaski was a noted cavalryman, played a large role in training Revolutionary troops, and took part in sieges at Charleston and Savannah. Fort Pulaski belonged to what is known as the Third System of coastal fortifications, which were characterized by greater structural durability than the earlier works. Most of the nearly 30 Third System forts built after 1816 still exist along the Atlantic and the Gulf Coasts. Wooden pilings were sunk up to into the mud to support an estimated 25 million bricks. Fort Pulaski was finally completed in 1847, after 18 years of construction and nearly $1 million in construction costs. Walls were 11 feet thick and were thought to be impenetrable except by only the largest land artillery. The smooth bore cannon of the time had a range of only around half-a-mile, and the nearest land (Tybee Island) was much further away than that. It was assumed that the fort would be invincible to enemy attack. In reference to the fort's strength, United States Chief of Engineers, General Totten remarked that "you might as well bombard the Rocky Mountains." Civil War Though completed in 1847, Fort Pulaski was under the control of only two caretakers until 1860, when South Carolina seceded from the United States and set in motion the Civil War. Georgia Governor Joseph E. Brown ordered Fort Pulaski to be