Did Hershey's Chocolate Play a Role in WWII?

Hershey created a special chocolate bar, called a D-ration bar, during WWII
to help US troops sustain energy.

Hershey’s Chocolate played a role in World War II with the company
creating a special chocolate bar just for the US troops, as part of
emergency rations to sustain the soldiers’ energy levels during combat.
The US government requested that Hershey create a chocolate bar that would
be able to provide quick nutrition to soldiers, while also being
lightweight and able to withstand high temperatures. The chocolate company
created an emergency ration bar, known as the “D-ration bar” that
contained dark chocolate, as well as skim milk powder and oat flour. The
recipe was so thick, it originally had to be molded by hand instead of in
the Hershey factories, and soldiers had to slice it with knives to eat.
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