. "World War II" . "ruin" . "war" . "Imperial Japanese" . "wartime Japan" . "attacking U.S. and British Empire forces" . "Japan entered the war" . "Japan's role" . "Japanese occupation of Asia" . . . "Japan during World War II" . . "war against Japan" . . . "Japanese" . "Japan" . "Japan's involvement" . "Japan's entry into World War II" . "Japanese warships and submarines" . "Japan officially entered the war" . "Japan during World War II" . "Japan formally entered the war" . "wartime" . "the war" .