Oh, Canada! You're too often considered America's hat, but hats off to you for coming up with your own version of Lend-Lease, known as "Mutual Aid." (Source)

Lend-Lease is usually talked about as benefiting mostly the U.K. and Russia, but it actually benefitted many, many more countries—including China and Brazil. Now that's a lot of paperwork. (Source)

Not everyone loved the Lend-Lease Act, especially in Congress. Robert A. Taft was one of its biggest critics. In reference to the act he offered the following thought: "Lending war equipment is a good deal like lending chewing-gum—you certainly don't want the same gum back." (Source)

The title of the Lend-Lease Act includes both of the words "lend" and "lease" to suggest that the U.S. would get something back from the nations it supported in WWII. It wasn't called the "Please Take This for Free" Act, after all, was it? This return on investment didn't necessarily come in the form of banged up tanks and used bullets (Taft, we're looking at you), but in the form of resources in general that the U.S. could tap into when needed. This arrangement is called "Reverse Lend-Lease." (Source)

The U.K. handed over a lot of important research intelligence to the U.S. as part of their international agreement through Lend-Lease. This included a ton of information about military weaponry, including the Frisch-Peierls Memorandum, which provided essential information for the development of the atomic bomb. (Source)