Uncle Sam is supposed to be the living in carnation of the spirit of America. The character was created by Will Eisner, who more famously created The Spirit.
It's a comic book that was written and drawn at least two months earlier that shows the attacking of Pearl Harbor... in the story titled: The Bombing Of Pearl Harbor.
Now... not only does this comic book story foretell the bombing of Pearl Harbor, it correctly depicts Germany's "asian" ally as the force that does so.
Here's the story synopsis:
It's late in 1941... morning... Guam is attacked by "oriental" dive bombers. (no they don't say Japan... but China and Korea are not at that level of strength yet). As well, Pearl Harbor is attacked by "enemy" warship cannon fire, while another "hostile" fleet of ships steams toward North Africa from a Mediterranean port.
The U.S. decides to send its entire Atlantic Fleet to combat the enemy in the Pacific, which isn't the smart thing to do... as Uncle Sam lambastes Congress over that decision.
As Uncle Sam and Buddy Smith travel by sea from Washington, DC to Portland, Maine, they find things quiet... until they are themselves attacked by a mob on the wharf... after a brief fight, they are captured and placed in the hold of a large steel-hulled trawler.
They manage to escape... because why wouldn't you leave a popular superhero and his sidekick unguarded?
Uncle Sam hears a message sent from the trawler, and confirms his suspicions that these guys are spies and not common crooks.
Punching a hole in the trawler, they make their escape... a torpedo is launched at them from the trawler... Uncle Sam catches it and flips it back at the trawler - Kabloowie!
As our two heroes go to find a payphone, the scene shifts to the enemy fleet. With enemy fighter planes above, the German-looking officers joke about how smart the plan was for their allies to create a disturbance in the Pacific to draw America's attention away from its own shores.
At a US "sound-detector" station (something similar to early radar), Uncle Sam is around when it hears of a "alien" attackers... so Uncle Sam calls the Secretary of War who says it has less than 12 bombers available. He gets some cargo planes and mine layers and destroyers and goes out to meet the enemy.
As a large convoy of bombers attack Maine, Buddy contacts a private flying club and the president of a piano company about a plan he has concocted.
Using piano wire cables and other cables are attached to the US bombers belly to try and tangle up the propellers of the enemy planes... and five planes are destroyed in this manner.
Enemy battleships begin shelling Portland. Out in Portland Bay, Uncle Sam encounters the forty-foot-tall ghost of John Paul Jones. He was the United States' first well-known naval commander in the American Revolutionary War... not the bass player for Led Zeppelin.
I don't even know why I know who both John Paul Jones' are.
So... at Portland Bay, Jones tells Uncle Sam of a plan and disappears... because he's a ghost. Anyhow, using the townsfolk's help, they and Uncle Sam load the two ships with oil drums and sail around the rear of the enemy fleet leaving a leaking trail of oil around the enemy... and then they ignite it.
Troop carrying planes then drop parachutists down into Boston, but Buddy and his dangling rope planes manage to destroy the enemy planes...
As Buddy and the other plane fly back to Portland, Maine, they see nine large "enemy" warships caught within the ring of burning oily water... when one catches fire, it's ammunition cache explodes... it sinks.
The American bombers come back and bomb the enemy warships... who sail into Portland harbor and surrender...
Everyone cheers for Uncle Sam... Uncle Sam turns and cheers the ghostly apparition of John Paul Jones. The end.
You'll notice that the story does NOT say Japan, Italy or Germany... but hints at it. It's because the United States was not involved in WWII until after the attack on Pearl Harbor... which in reality did not take place until one month AFTER this comic book hit the newsstands.
Nowadays, the Uncle Sam comic book character is owned by DC Comics... and exists (existed) on an Earth X where the Nazi's won WWII. Please... you don't think real books or television came up with that concept first, do you? Nowadays, thanks to DC continuing to rewrite their own history, Uncle Sam and his Freedom Fighters are now just heroes who fought during WWII and continue to fight evil wherever it reigns in 2016 and so on.
As for this old edition of National Comics #18... it is yet another clear case of life imitating art.