The wall is typically defended through a combination of physical barriers, surveillance systems, and personnel. These may include guard towers, patrols, and security checkpoints to monitor and control access. Additionally, technological measures such as cameras, alarms, and motion sensors enhance security. In some cases, natural obstacles and strategic fortifications bolster the wall's defenses against potential breaches.
A place defended by a wall is called a building. If it's a really strong wall, it might be called a fortification (or a fort, for short).
people
guards soilders
there wasn't anything to defend it from.
Soldiers defended the Great Wall of China by standing guard over the wall from the watch towers
Castles usually defended themselves by having a wall with a moat or ontop of a hill
because the wall that the Saxons had made had defended them from the arrows
Some of the best soldiers had to guard it and fight against the people coming to invade China
people flung slushies from the top and brain-freezed their enemies to death
There is no such wall. It is popular to believe that this was the role of Hadrian's Wall however the reason for its construction is unclear. It was built by Romans and could have been used to control immigration.
His mother defended him with love. Harry loves his friends.
The person being defended is referred to as the defendant.