To sum up: Captain Freedom, dressed in yet another one of the ugliest flag costumes imaginable, takes a swing at Hitler, who is singlehandedly leading an army of what appear to be elf-boot-wearing Lovecraftian Horrors from the Deep through an incredibly well-made and presumably secret tunnel underneath the White House.
No, I think I'm going to stick with it:
Oh, Golden Age, you complete me.
Speed #16 cover is possibly by Al Avison, though if it is, he must have been rushed.
Thanks to Olaf.