Sorellona!! Sorellona!! It's terrible!!

For some reason the poster had drawn Japanese wearing topknots and katanas

Operation name: "L'esigenza ’G’" ("The need ’G’") "G" = "Giappone" = "Japan" in Italian.

During the war, the Germans and the Japanese used submarines to establish direct contact with one another.

The Italians, however, used a different method. Rather than use of submarines, they instead took the route by air.

This operation was a brilliant success. They arrived from Rome to Tokyo!!

But they flew through the Soviet airspace, of which Japan had a neutrality pact with the Soviet Union. So, Japan was not able to make this public to the world. The Italian crew were then confined, which outraged the crew. The crew ended up leaving in a hurry.

On the other hand, the plane's engine manufacturer, Alfa Romeo S.p.A., made a poster commemorating the operation's success.

They probably knew, and it's probably just a caricature.... probably.