The core of the new defense is the new Amphibious Brigade. The brigade will be based on the southern island of Kyushu at Sasebo, close to Japanese—and American—amphibious ships.For decades, Tokyo’s plans to defend the homeland were frozen in amber. During the Cold War it was assumed, that in the event of war the Soviet Union would invade the northern one-third of the country. A powerful tank corps to contest a Soviet landing, a strong air force to beat back city-destroying bombers and a strong destroyer force to keep open the sea-lanes would be all that was needed to hold out until the Americans arrived.
[excerpted]http://www.scout.com/military/warrior/story/1720530-japan-s-plan-to-defend-a-chinese-invasion
