![]() More about the Mongols and the Yuan Dynasty Other uses of gunpowderīy this time, Chinese engineers probably also used gunpowder to blast rocks away to make roads and canals. Soon after that, scientists in Japan started to experiment with gunpowder weapons too. The Mongol army also used gunpowder bombs when it was trying to invade Japan in 1281 AD. The first battle where we know someone used cannons was in 1287, when Yuan Dynasty (Mongol) generals used them to end the Mongol Nayan’s rebellion. ![]() Cannons may have existed for a while before that. The first picture of a cannon is from 1128 AD, under the Song Dynasty. Nobody knows exactly who was the first to use cannons in war. More about equal and opposite forces First army to use cannons This is the same idea that makes guns and cannons work today. They put small stone cannonballs inside bamboo tubes and shot the cannonballs out by lighting gunpowder at one end. They used gunpowder in the form of rockets. Soon after the use of fire spears, Chinese armies made the next big step. (Dazu Rock carvings, near Chengdu in central China, 1128 AD) The ball is missing now, but you can see where it once was. Earliest image of a cannon: A hand cannon firing a ball.
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