Hull-down

Hull-down is a cool way of hiding a big car or a tank so that only the important parts stick out. Imagine if you're playing hide-and-seek, and you find a box that's just the right size to cover your whole body while still being able to peek out to see if anyone is coming. That's kind of what hull-down is like for cars and tanks.

When a tank or car is hull-down, it means that the hull part, which is the body of the tank or car, is hidden behind a hill or other obstacle. Only the very tippy-top part of the tank or car is visible, which is usually the barrel of the gun.

This is useful in battles, because it makes it harder for the other team to shoot at the tank or car. Since the majority of the vehicle is hidden, there's less chance of getting hit by enemy fire. Plus, the top part of the tank or car can still shoot and attack, so it's not completely defenseless.

Overall, hull-down is a sneaky way of protecting tanks and cars in battle by hiding most of them behind an obstacle while still being able to attack.