Which packaging innovation was specifically developed during WWII to protect military equipment being airdropped to troops and is now considered a milestone in military product packaging design?

Throughout military history, product packaging has played a crucial but often overlooked role in warfare effectiveness. From ancient times to modern conflicts, how supplies are packaged, preserved, and delivered to troops has directly impacted battlefield outcomes. This trivia question explores a revolutionary packaging innovation from World War II that changed how soldiers received vital supplies and influenced military logistics for decades afterward.

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The K-ration box, made from waxed cardboard that could withstand extreme temperatures and moisture
The Cushioned Fragmentation Barrier (CFB), using layered corrugated paper and rubber inserts
The Cellular Cushioning System, using interlocked paperboard cells that absorbed impact through controlled collapse
The Hermetic Preservation Container, using vacuum-sealed metal tins with rubber gaskets