Okay kiddo, have you ever heard a song that makes you feel really energized and excited? Well, a war song is kind of like that, but it's for grown-ups and it's all about war.
When two groups of people or countries are fighting each other, they often have special songs they sing to get themselves pumped up and ready for battle. Sometimes these songs have words that talk about how strong and brave their side is, and how they're going to defeat the other side.
War songs can be really old, like from hundreds of years ago, or they can be more modern. Some of them have been passed down from generation to generation and are still sung today.
It's important to remember though, that war is not a good thing. People can get hurt or killed, and families can get torn apart. But sometimes, when people believe they need to protect their families or their way of life, they feel like they have no choice but to fight. And that's when they might sing a war song to give themselves courage and strength.