Which country first mass-produced the iconic steel 'Brodie' helmet in 1915 that revolutionized soldier protection and became the model for modern combat helmets?

World War I marked a turning point in battlefield protection when devastating artillery fire caused 60-70% of all casualties. This led to a critical product innovation that continues to save lives today. Test your knowledge about the evolution of this essential piece of military equipment that transformed from cloth caps to advanced ballistic protection systems over the last century.

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Great Britain
Germany
France
United States