from passing through the ship's channel in front of the fort. The battery was deactivated in 1917 and its guns removed. The fifth battery was Battery Schenk, named for Lieutenant William T. Schenck, who was killed in action in Luzon in 1900 during the Philippine–American War. The battery initially held two, later increased to three, 3-inch rapid-fire guns. It too protected the ship channel. 20th century Hurricanes in 1906 and in July 1916 caused a great deal of damage to the wooden houses at Fort Morgan along Officer's Row. The wide porches that helped cool the buildings in summer proved particularly vulnerable. In 1915, the Coast Artillery Corps built an experimental battery, called Battery Test, about a mile away from Fort Morgan. The battery held a single 10-inch gun on a disappearing carriage. Then in 1916, the Navy had two battleships, the and the , shell the battery for two days to see how well it would survive, which it did with remarkably little damage. The gun was removed shortly after the tests. After the US declared war on Germany in April 1917, the fort took on the task of training men of the Coast Artillery in modern weapons. The fort also trained field anti-aircraft batteries. In 1920 the fort received four British 9.2-inch howitzers. These guns were abandoned and later scrapped in 1924 when the Army abandoned the fort. Thereafter, the base deteriorated quickly. During World War I, the Army had established a radio transmitting and receiving station at Fort Morgan as a part of a nationwide Morse-code communication network. The transmitter had the call letters WUR. When Fort Morgan was abandoned, the call letters were transferred to Fort McClellan, Alabama. In April 1942, the Army re-occupied the fort and constructed an adjacent airfield. Initially, the Coast Artillery brought five Model 1918 155mm (6.1-inch) guns to equip the fort. The Army placed two on top of Fort Morgan on mounts that permitted 360 degrees traverse. The remaining three guns stood on the fort's parade ground. The War Department turned Fort Morgan over to the State of Alabama in 1946, and the Army again abandoned the fort in 1947. The War Department disbanded the U.S. Army Coast Artillery Corps itself in 1950. Recent developments Fort Morgan was designated a National Historic Landmark in 1960. In 2007 it was listed as "one of the nation's 10 most endangered battle sites" by