Which ammunition packaging innovation, first widely adopted during World War I, allowed soldiers to rapidly load rifles without fumbling with individual rounds?

Throughout history, military innovations have not only shaped battlefields but also created massive consumer markets. Some military products eventually transformed civilian life, while others remained specialized. This poll tests your knowledge about a revolutionary military product packaging innovation from the early 20th century that fundamentally changed how soldiers carried and accessed their ammunition in combat situations, creating a template for military equipment design that persists to this day.

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The 'Charger Clip' (stripper clip) system
The 'Powder Horn' measurement system
The 'Cartridge Box' leather pouch system
The 'Bandolier Belt' cross-body system