TOKYO — Japan’s first long-range missile was deployed at a southwestern army camp, officials said Tuesday, as the country pushes to bolster its offensive capabilities. The upgraded Type-12 land-to-ship missiles, developed and produced by Japan’s Mitsubishi Heavy Industries , became operational at Camp Kengun in Kumamoto prefecture. “As Japan faces the most severe and complex security environment in the postwar era … it is an extremely important capability to strengthen Japan’s deterrence and