Which civilian product designer is credited with creating the iconic M1 Helmet that protected American soldiers from WWII through the Vietnam War?

The M1 Helmet is one of the most recognizable pieces of military equipment in history. First introduced during World War II, its distinctive design became an icon of American military power and influenced helmet design for decades. This poll explores the industrial design history behind this famous military product that protected millions of soldiers across multiple conflicts and became a symbol of American military presence worldwide.

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Harold Bainbridge, who previously designed construction safety equipment for U.S. Steel
Major Harold G. Sydenham, a military equipment specialist who also designed field radios
Brigadier General William P. Screws, who led the Army's Equipment Board
Industrial designer Harold Bainbridge, who previously designed mining helmets for the McCaa Mining Company