fire balloon (fusen bakudan)

Japan’s Ultra Secret World War II Super Weapon: Balloons

The world’s first intercontinental weapons system (meaning that it was a weapon that could be launched from one continent and reach another) was first used in World War II. This weapon system carried its payload for over 5,000 miles (8,000 km). This would be the world record for nearly 50 years. You might think that…