If you were asked, "Which period between 1940 and now led to the largest loss of male workers from Japan's economy?" You probably would answer World War II, since during the period 1939 through to the surrender in August of 1945, around 2,000,000 soldiers, over 3% of the population, perished in the pursuit of Emperor and empire. However, in fact the period of greatest loss (but not necessarily loss of life) of males from the Japanese workforce is...