What retail innovation principle led to the standardization of military identification tags (dog tags) during World War I?

Dog tags are one of the most recognizable military products with a fascinating retail innovation story. These identification tags revolutionized battlefield casualty processing and have become iconic symbols of military service. This poll tests your knowledge about how this simple but crucial product innovation developed and changed military operations forever. Do you know the retail innovation history behind this essential military item?

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Mass production techniques pioneered by Ford Motor Company were applied to create uniform, stamped metal tags
Inventory management systems from department stores were adapted to track soldiers through their unique ID numbers
Jewelry manufacturers repurposed their equipment to create durable metal identification for soldiers
Mail-order catalog distribution methods were used to ensure every soldier received identical tags