The Roman Empire’s Secret Weapon Was Whistling Ammo

(via Popular Mechanics) A team of archaeologists, bolstered by a helpful fisherman, have discovered a previously unknown psychological tactic employed by the Roman army: whistling slingshot bullets. The bullets were used approximately 1,800 years ago and were discovered at Burnswark Hill in southwestern Scotland.  They were designed to create a horrifying sound in battle as they are tossed over the enemy’s head. The more noise and confusion on the battlefield, the better for the famously disciplined Romans. Click or tap here for more.