Imagine you are playing with building blocks, and you have built a tall tower. Now, imagine someone comes and tries to knock down your tower. That is what it means to breach a tower.
In the real world, a tower could be a tall building, a fortress, or even a castle wall. When someone breaches a tower, it means they have found a weak spot or a way to break through the tower's defenses.
This can be a dangerous situation because the people inside the tower may be protected from enemies or bad weather. When the tower is breached, they can be exposed and vulnerable to danger.
For example, imagine you are playing hide-and-seek with your friends, and someone finds your hiding spot. They have breached your hiding spot, and now you are exposed and vulnerable to being found.
Overall, breaching a tower means breaking through defenses or finding a weak spot in a building or structure to gain access or cause harm. It can be dangerous and have serious consequences.