[split] Phalanx warfare: use of the spear

[Paul Bardunias]

I just took a look at the data in my book.  A modern razor broadhead from a 30lb bow cuts right through 4mm of leather, pierces, but incompletely penetrates two layers of 8-10mm, and is stopped by 12 mm with no perforation on the inner layer.  For comparison, 6-8mm of twinned linen was incompletely penetrated, and around 4-5mm of linen stopped it cold when treated with kaolin clay.