A simple but effective device, inspired by techniques once used by the Roman Empire, is being used to disrupt Russian vehicles by the Ukrainian armed forces.Known as a caltrop, the device is a four-pronged, heavy gauge steel puncturing spike which can be used to disable vehicles. The idea originated from a technique used by the Romans to disrupt enemy cavalry and horses and its design means one devastating spike is always thrust upwards. More: https://www.forces.net/ukraine/how-ro… #forcesnews #ukraine #russia #military #army #history