Which company's retail strategy of distributing their product to American GIs during WWII was so successful that their product became strongly associated with American military identity?

During World War II, brand identity and marketing strategies took unique turns as companies adapted to wartime conditions. Some consumer brands became deeply associated with military history through their products, marketing campaigns, or support of the war effort. This connection often created lasting brand identities that persisted long after the conflict ended. Test your knowledge about one famous retail strategy that became an iconic part of military history!

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Coca-Cola, which built 64 bottling plants near combat zones to provide soldiers with bottles for 5 cents regardless of cost
Hershey's, which developed the D ration survival chocolate bar that troops nicknamed 'Hitler's Secret Weapon' due to its intentionally unpleasant taste
Gillette, which provided free safety razors to every American soldier to maintain the clean-shaven military appearance requirement
Zippo, which guaranteed every lighter would work in combat conditions or be replaced through their 'mail anywhere' warranty program