Which military conflict first introduced the iconic 'C-Ration' canned combat food that revolutionized battlefield nutrition with its innovative packaging and self-contained meal system?

During wartime, packaging innovations often led to breakthroughs that later influenced civilian products. Military rations needed to be portable, durable, and provide adequate nutrition in challenging conditions. These requirements pushed the boundaries of food preservation and packaging technology. Test your knowledge about a revolutionary packaging innovation that emerged during a major conflict and changed how soldiers received their sustenance in the field.

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World War I (1914-1918)
Spanish-American War (1898)
Korean War (1950-1953)
Vietnam War (1955-1975)