Fort McAllister was a Confederate earthen-work fort used to defend Savannah, Georgia during the American Civil War. It was the southernmost of the forts defending Savannah and was involved in the most battles. It was located on the Ogeechee River in Bryan County. It is listed on the National Register of Historic Places (#70000197). Fort McAllister was one of three forts protecting Savannah, the others being Fort Pulaski and Fort James Jackson standing in Confederate defiance of the Union naval blockade. The southeast coast of the United States was the place where both combatants tested the latest in naval artillery and coastal defenses. Fort McAllister was the key to unlocking the defenses around Savannah, one of the most important Confederate ports on the Atlantic Ocean.