Which American company's wartime slogan "We're all in this together" helped transform its brand from a luxury manufacturer to a patriotic necessity during WWII, while securing its post-war market dominance?

During World War II, consumer goods became intertwined with military necessity in unprecedented ways. Companies pivoted their brand strategies to support the war effort while securing their market position for the post-war boom. This trivia question explores how one iconic American brand positioned itself during this pivotal historical period, creating a legacy that would influence retail marketing for decades to come.

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Coca-Cola, which promised that every American soldier would get a Coke for 5 cents, no matter where they served
Ford Motors, which temporarily stopped civilian car production to manufacture military vehicles and aircraft
Hershey's, which created the Field Ration D chocolate bar specifically engineered not to melt in battle conditions
Levi Strauss & Co., which leveraged its denim durability to become the official supplier of work clothes for defense industries