From Wiki: “Hershey Chocolate supplied the U.S. Armed Forces with chocolate bars during World War II. These bars were called Ration D Bars and Tropical Chocolate Bars. The Ration D Bar had very specific requirements from the army: It had to weigh 1 or 2 ounces (28 or 57 g); it had to resist melting at temperatures higher than 90 °F (32 °C), and it had to have an unpleasant-enough flavor to prevent the troops from developing cravings for them.”
From Wiki: “Hershey Chocolate supplied the U.S. Armed Forces with chocolate bars during World War II. These bars were called Ration D Bars and Tropical Chocolate Bars. The Ration D Bar had very specific requirements from the army: It had to weigh 1 or 2 ounces (28 or 57 g); it had to resist melting at temperatures higher than 90 °F (32 °C), and it had to have an unpleasant-enough flavor to prevent the troops from developing cravings for them.”
> In 1916, the chocolate magnate built a railroad to keep its sugar moving
And, in 2026, they want to do it again. How sweet. /s