Naval history is like playing with toy boats, but real.
A long time ago, a really long time ago, people used to travel on land or in wagons pulled by horses. Then, someone came up with the idea of building boats to travel on rivers and lakes. Soon, boats began sailing in bigger bodies of water like seas and oceans.
Back then, boats were powered by the winds, and sails were used to catch the wind and push the boat forward. But boats also need people to sail them, and not just anyone can do it. They needed people who knew how to use the sails, how to navigate by the stars and the sun, and how to fight off any bad guys who might try to take over their boat.
Over time, boats became bigger and more powerful, and new inventions began being added to improve the boat's speed and effectiveness. Ships were built that could even sail across the whole world without coming back to shore. But with the better boats came better weapons, and soon, there were battles between different countries and groups fought on the water.
Some battles were fought with guns and cannons, while others were fought with swords and arrows. These battles weren't just fought on the surface of the water, they also went underwater. Submarines were invented so that people could sneak up on other boats and attack them without being seen.
Naval history is the story of all these different boats and ships, and all the brave sailors who sailed them. It's about exploring the world by sea, about trade and commerce, and about big battles fought on the water. It's a really cool part of history and one that we can learn so much from.