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UK pledges $416 million to buy 10,000 drones for Ukraine
(kyivindependent.com)
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That was actually being developed around that time, just not by the Japanese from what I am aware of: https://en.wikipedia.org/wiki/Operation_Aphrodite
Besides what is in that link, I believe there were several other similar things going on between the USAF(or equiv. I don't think the USAF was formed at the time.) and the RAF.