CHIKUZEN, Fukuoka Prefecture--A full-size replica of the rarest of Japan’s World War II fighter planes, the Shinden interceptor, has gone on display at the Tachiarai Peace Memorial Museum here.

With its forward-swept wings and radical design, the Kyushu J7W Shinden was unlike anything else in the skies during WWII. Built as a last-ditch interceptor to stop incoming Superfortresses ...