Artillery in Japan is like big guns that shoot things really far away. They were used a long time ago when people had wars and wanted to shoot their enemies from far away. The Japanese artillery was made of metal and had a really big hole where they put the gunpowder and the bullet.
When the gunpowder inside the artillery was lit, it would explode and send the bullet flying through the air towards the target. The Japanese had different types of artillery depending on how far they wanted to shoot and what kind of target they were aiming at.
Some of the most famous Japanese artillery were the cannon, which is a really big gun that had to be pushed around by a lot of people, and the howitzer, which was like a cannon but could shoot higher. The Japanese also made use of mortars, which are like big bowls that shoot bombs up into the air and then they explode when they hit the ground.
The Japanese used their artillery during battles to try and defeat their enemies. Sometimes they would use them from behind walls or on high ground to make it harder for their enemies to fight back. Other times they would use the artillery to attack buildings or ships from far away.
Overall, the artillery was a very important part of the Japanese military during times of war. They helped the soldiers to fight and defend their country.