Which military product innovation was initially rejected by the U.S. War Department in 1861 with the statement: "You have a machine that requires no skill to operate, no courage, and no patriotism"?

Throughout military history, product innovation has been a critical factor in determining battlefield success. From the longbow to stealth technology, military R&D departments have consistently pushed the boundaries of what's possible. This trivia question explores a pivotal moment in military product development that changed warfare forever. Test your knowledge about how battlefield needs drove one of history's most significant innovations.

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• The Gatling Gun
• Submarine warfare vessels
• Reconnaissance balloons
• Breech-loading rifles

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