I’ve done this arithmetic a few times now and I think you’re wrong: someone born the week after ww1 ended (November 1918) would have been 22 in November 1940, w

I’ve done this arithmetic a few times now and I think you’re wrong: someone born the week after ww1 ended (November 1918) would have been 22 in November 1940, when the first draft registration was held for men who had reached 21. So there should be about 12 months of births in there.