Previous - Japan becomes a Communist State! (CYOAH) The Soviets decide to build up a large navy to fight off the Allied forces. By the time the Allies arrived at Japan, a large Soviet and Japanese navy was waiting. Soon, the largest naval battle in history began. However, Soviet ships were not as good as the Allied ships. It was a devastating defeat for the Communists, and Japan was soon invaded. However, the Japanese put up a tough resistance, and all Japanese citizens were put to work digging trenches. A large trench was dug, and both sides built up large forces on both sides. Soon, the Allies advanced.