I was stationed outside Tokyo for three years in the mid-60s and in a lot of places, they were still rebuilding, 20 years after.
Much of Sagamihara was still burnt piles of rubble in the mid 50s. About a block down from our house in Yokohama was a smashed multi-story building that our maid said was a vaccine facility during the war. The lot was covered with broken slabs of concrete and thousands of tiny glass vials. The Japanese government did next to nothing for their veterans. We saw many of these men, some with missing limbs, begging in front of various religious shrines.
To feed the competitive natural of this feudal, militaristic society he taught them, "GASP"! Baseball and Little League would never be the same! Of course, this years Little League World Series demonstrated American Nobles Noblige!