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Brodie pattern MK II green steel helmet worn by a Belgian officer - Collections Search - United States Holocaust Memorial Museum
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Do WWI helmets protect against shock waves as well as modern designs? | The Western Front Association
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Do WWI helmets protect against shock waves as well as modern designs? | The Western Front Association
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Amazon.com : Epic Militaria WW1 US M17 Helmet - American Military Army Steel Cotton Lined Reproduction (Medium (56/57 cm)), Green : Sports & Outdoors
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WWI Helmets Protect Against Shock Waves Just as Well as Modern Designs | Duke Pratt School of Engineering
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