This is fascinating, testing on WW1 Helmets have shown they are equal to outperform modern designs in the prevention of traumatic brain injuries from blast shockwaves. The most surprising being the Adrian, which outperformed its contemporaries and modern designs from direct overhead blasts.
WWI helmets protect against shock waves just as well as modern design. French Adrian helmet suggests simple geometry may save brains from overhead blasts. Biomedical engineers from Duke University have demonstrated that, despite significant advancements in protection from ballistics and blunt imp