An American woman never learned what happened to her husband, whose plane was shot down over Les Ventes, France during WWII. She finally got her congressman to reopen his case in 2011. She was shocked to learn the town had been memorializing him and his sacrifice for 67 years.
During WWII, Hawaii had its own unique US banknotes. In case of Japanese invasion, the US government would have declared the notes worthless to prevent their use by Japanese troops.
A French Mathematician concealed his proficiency with differential equations to avoid working for the Nazis. While in a POW camp, he developed sheaves, sheaf cohomology, and spectral sequences which are important tools for modern Algebraic Geometry.
The two sons of Archduke Franz Ferdinand were sent to Dachau and made to clean toilets for objecting to Hitler’s annexation of Austria.
Günther Quandt who is the founder of BMW, was a member of the Nazi party and supplied the Nazi regime with ammunitions. Hitler gave him the title of Wehrwirtschaftsführer or “Leader in the War Economy.”
During World War 2, Hershey made a bar for US soldiers that was meant to taste so bad, soldiers would only eat it if they were starved.
After WWII some Jews faced fines for not having paid rent on their homes while they were incarcerated in concentration camps.
The average life expectancy of a flamethrower operator in combat during WWII was less than 10 minutes.
A St. Bernard named Bamse was a mascot of the Royal Norwegian Navy during WWII and was known for breaking up fights amongst his crewmates. He once saved a young lieutenant commander who was being attacked by a man wielding a knife by pushing the assailant into the sea.
During WWII JFK was stranded in the Solomon islands, and ended up carving a message into a coconut, that a native delivered to the nearest US base and saved his life.