Which packaging innovation was developed for D-Day operations in 1944 and later revolutionized civilian product packaging after the war?

During World War II, packaging design became crucial for military operations, with innovations that later transformed civilian product packaging. One particular breakthrough changed how soldiers received essential supplies in challenging battlefield conditions, eventually influencing post-war retail packaging worldwide. Test your knowledge of this significant military packaging innovation that bridged wartime necessity and peacetime consumerism.

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DUKW waterproof packaging containers
K-ration collapsible tubes
Aerosol spray cans
Vacuum-sealed steel containers