History: USS Missouri was the fourth Iowa-class battleship (hull number: BB-63) built by the U.S. Navy in 1944 and the third U.S. Navy warship to bear the name of Missouri. The ship was the last U.S. battleship to be built and the last to be decommissioned. He was involved in World War II, the Korean War and the Persian Gulf War in 1991.the last to be decommissioned. He was involved in World War II, the Korean War and the Persian Gulf War in 1991. AG1:active canons127mm AG2:active canons406mm front AG3:active canons406mm back Use VTOL to turn the canons Use trim to do up and down