Which consumer product manufacturer sent millions of units to WWII soldiers, creating a legendary military association that transformed its marketing strategy for decades to come?

During WWII, one famous product's marketing strategy became so intertwined with military history that it continues to influence consumer perceptions today. This product was initially sent to American troops overseas as part of a morale-boosting campaign, but quickly became much more significant. The manufacturer's strategic product endorsement by military personnel created one of the most enduring brand associations in retail history, permanently connecting the product with American military might and patriotism.

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Coca-Cola, which built 64 bottling plants near combat zones and promised that every soldier could get a bottle for 5 cents
Ray-Ban, whose aviator sunglasses were designed for Air Force pilots but became a civilian fashion sensation
Gillette, whose safety razors were standard issue in military kits and transformed men's grooming habits worldwide
Hershey's, whose special tropical chocolate bars were designed to withstand combat conditions without melting