The Baltimore-class heavy cruiser was a heavy cruiser built by the United States in World War II, and the first to be built by the United States after it was freed from treaty restrictions. It looks a bit like the Cleveland class, and the construction of this class has been delayed a little as the U.S. military's need for light patrols became more urgent in the early days of the war. It was not until April 1943 that the first Baltimore entered service. Battleship Manual: Press 1 key to turn on the anti-aircraft gun set by vtol and trim control, press 2 keys to activate the main gun set by trim and vtol control, 3 keys to activate the sub-gun group, by trim and vtol to control the 4 key activation engine, 5 keys to activate the vertical take-off and landing system by trim control, the author's words: like, don't forget up