superstructure. The light anti-aircraft battery consisted of 56 quad-mounted Bofors guns and 34 single-mounted Oerlikon guns. A pair of Mk 34 gun directors aided gunlaying for the main battery, while two Mk 37 directors controlled the 5-inch guns and a Mk 57 director aided the 40 mm guns. The main armor belt was thick in the central portion of the hull, where it protected the propulsion machinery spaces and the ammunition magazines, thinning to 5 inches at either end. The main armor deck was thick. Her conning tower received of armor plate on the sides. The gun turrets had thick faces. Service history Guam was authorized under the Fleet Expansion Act on 19 July 1940, and ordered on 9 September. She was laid down on 2 February 1942 at the New York Shipbuilding in Camden, New Jersey. She was launched on 12 November 1943 with the sponsorship of Annabel McMillin, wife of former Governor of Guam George J. McMillin (who was being held by the Japanese as a prisoner of war at the time), after which fitting-out work was effected. The ship was completed by September 1944, and she was commissioned into the US Navy on 17 September, under the command of Captain Leland Lovette. Guam left Philadelphia on 17 January 1945, after completing her shakedown cruise off Trinidad. She proceeded through the Panama Canal to join the United States Pacific Fleet in Pearl Harbor, which she reached on 8 February. While there, Secretary of the Navy James Forrestal visited the ship. On 3 March, she departed Hawaii for Ulithi, where she joined her sister on 13 March. Shortly thereafter, Guam and the rest of Task Force 58, the main strike force of the US Navy under the command of Admiral Arthur W. Radford, departed for a raid on the mainland Japanese islands of Kyushu and Shikoku. Task Force 58 arrived off Japan on the morning of 18 March and was quickly attacked by Japanese kamikazes and bombers. Guam was detached from the unit to escort the badly damaged carrier back to port, which lasted until 22 March. Guam then returned to Task Force 58, assigned to Cruiser Division 16, part of Task Group 58.4, and steamed to Okinawa. On the night of 27–28 March, Guam and the rest of Cruiser Division 16 bombarded the airfield on Minamidaitō. After concluding the bombardment, Guam returned to the carrier screen while they