I guess I always assumed the opposite, given the amount of material the company must have produced for the military at the time…
Apparently I was wrong.
There is a book (published in 2002) that I must now add to my reading list…someday when I have the time:
“The Greatest Invention of the Leitz Family: The Leica Freedom Train” by Frank Dabba Smith.
Thanks to user Luke Kaven of DPReview for bringing this to my attention.