A scene in the movie “Darkest Hour” has Churchill speaking on his direct line to FDR during Lend-Lease. In the conversation, Churchill says he needs planes- FDR says he can’t fly them to a brit aircraft carrier00 these were Brit purchased bombers (Hudsons?) because of the Neutrality Act and other laws recently passed. He then offers to fly them to Canadian border. Here’s a clip from the movie.
“Look we could possibly..we could take your planes to about a mile from the Canadian border, and you send in a horse team over from Canada, nothing motorized.... we could do that, Winston...” Apocryphal not an actual quote, though the calls had to have been recorded.
Here: https://www.youtube.com/watch?v=Wo4U1SqnRpA
I just read a series of histories of the war in the Pacific by Ian Toll in which he mentioned that the Japanese never really understood how to do efficient mass production. He mentioned that one of the factories that manufactured the Zero didn’t have an airstrip or a rail line, so they had to tow the Zeros by horse to an airstrip something like 25 miles away. Near the end of the war their horses were starving, so they lost a lot of them from overwork towing what had been a state of the art war plane at the beginning of the war.