5. SLAM MISSILE
The SLAM Missile has a nuclear-powered ramjet engine, which allows longer flight durations and when given a target, the SLAM missile flies at super low altitudes and drops its payload. However, the real damage is done when the missile runs out of fuel and contaminates whatever area it falls on with radiation.
6. BOW AND ARROW
The Mongols were famed for a lot of things but feared for their ability to use the bow and arrow while on horseback. The Mongols conquered vast amounts of land during their reign, including China. The bow and arrow needed years of training but once mastered, they provided the greatest edge for battles of their time.
7. TANKS
The invention of tanks broke the stalemate between the British-French and German-Austrian armies during World War I. From its humble beginnings as a farm tractor, tanks are now some of the most sophisticated weapons of any army. DARPA is now developing an agile tank, one that can maneuver and evade instead of taking hits.
8. LASERS
Lasers have long been scouted as a future weapon. Today, laser weapon systems serve mainly as defensive countermeasures that for taking out any airborne projectile, be it mortar shells, rockets or drones. The US Navy, recently, has successfully tested its Advanced Test High Energy Asset (ATHENA) and precisely disabled a moving truck without any human casualties.