At the same time it had been the custom among Japanese American families to send their daughters to Japan for what amounted to "finishing school" about the time they came of marriageable age. I don't know if it was a thousand, but it was certainly hundreds.
The Germans used several Axis Sallies, as well.
You might be interested in knowing that "finishing schools" are still operating in Japan, though certainly are not flourishing to the extent the were back in the 1940's. There was a young female co-worker in Japan (fairly normal, not bad looking, but a little on the shy side) who left the company to go to one of these places. This was in the early 1990's. I was shocked because I didn't know such places even operated still.
I didn't want to be nosy, but I was curious about the culture, so talked to a couple of her closest friends in the company. They told me that many Japanese, particularly in the rural areas, still felt this was an important "rite of passage" for their daughters.