"The only cartoon ever nominated for a Nobel Peace Prize, this 1939 Hugh Harman cartoon shows a post-apocalyptic world populated by animals picking up the pieces after a war kills every human on earth."
Yes, it starts off with caroon squirrels but once they start talking about "men" the design aesthetic becomes pure dieselpunk.
An odd, grimly uplifting-ish piece about humankinds's final war of self-extinction. It's a rather naive view of final, total war in the post atomic age but in its time must have seemed more plausible. Widely suppressed by entertainment and government establishments after its release for being too pacifist....