Tankette

Okay, so imagine you have a really small car that looks like a little tank. That's called a tankette! But instead of being used for driving around town, tankettes were used for fighting in wars a really long time ago. They were like baby tanks, but not as big or powerful.

While regular tanks were designed to be really tough and powerful, tankettes were made to be small and speedy so they could drive around really fast and shoot at enemies with their machine guns. They were used mostly in the early 1900s and World War I, but by the end of World War II they were mostly replaced by bigger and better tanks.

In summary: tankettes were tiny tanks used in wars a long time ago. They were fast, small, and equipped with machine guns.