A siege is when a group surrounds a city. 

A siege is when a group surrounds a city. 

Attackers use tools to break the walls. Some use long ladders to climb up. 
People inside the city must stay safe. They wait for the siege to end. Sometimes, people talk to find peace. This can help the fighting stop. It is a very hard time for everyone.
A siege is a way to take a city. 

Sieges can last for many months or even years. Attackers use many tools to break through defenses. They might use long ladders to climb walls. They may use big machines like trebuchets to throw heavy things. 
Life inside a city during a siege is very hard. People may run out of food or get sick. Sometimes, the two sides talk to find peace. They might use diplomacy, which is a way to settle things by talking. If a city surrenders quickly, the soldiers might be allowed to leave safely. In the past, many great walls were built to stop these attacks. But as cannons became more powerful, walls became less useful.
A siege is a military blockade of a city or a fortress. The goal is to conquer the place through a long wait or a strong attack. This type of fighting is called siege warfare. One group stays in a strong, defensive spot called a garrison. The other group is the attacker, and they are said to be laying siege. Because the two sides are so close, they often use diplomacy to talk. Diplomacy is a way to negotiate or make deals to end the fight. 
To start a siege, the attacker must surround the target. This is a tactic known as investment. It blocks supplies and help from reaching the people inside. Attackers might build earthworks like trenches and ramps to encircle the area. This is called circumvallation. Sometimes, attackers build another ring of forts to protect themselves from outside help. This second ring is called contravallation. 
Attackers use many tools to break through walls. They might use ladders to climb up the sides. They also use siege engines to throw heavy objects. These machines include catapults, ballistae, and trebuchets. Some attackers use battering rams to break through gates. Another method is called mining. This is when soldiers dig a tunnel under a wall to make it collapse. 
Siege warfare has been part of history for a very long time. In the ancient Near East, the Sumerian city of Uruk had famous walls. In the 15th century BC, the Shang dynasty in China built huge walls at Ao. By the 9th century BC, Hazael of Aram Damascus used a trench system to siege Gath. Later, in 701 BC, Sennacherib of Assyria besieged Lachish in Israel. During the Renaissance, famous thinkers like Leonardo da Vinci designed new types of fortifications. 
Things have changed a lot as technology improved. In the Napoleonic era, powerful cannons made old walls less useful. In the 20th century, the way people fight changed again. Modern warfare uses huge amounts of power that can hit a target from far away. Because of this, traditional sieges are not as common today. Most modern sieges involve smaller situations, like people resisting arrest or holding hostages. 
A siege is a military blockade of a city or a fortress. The goal is to conquer the target through attrition or a prepared assault. Attrition is a method of wearing down an enemy over time. In this type of conflict, one party holds a strong, static, defensive position. This group is called a garrison. The attacking party is said to be laying siege to the location. Because the two groups are in close proximity, they often use diplomacy. Diplomacy allows the combatants to negotiate terms to end the conflict. 
A siege begins when an attacker encounters a fortified place that refuses to surrender. The attacker must first perform a tactic known as investment. This involves surrounding the target to block all supplies and reinforcements. It also prevents troops from escaping. Attackers may use circumvallation to strengthen their position. This means building a line of earthworks, such as a rampart and a trench, around the target. If the attackers fear help from the outside, they may build a second ring of forts. This defensive ring is called contravallation. 
Attackers use various methods to reduce fortifications and bypass defenses. They may use siege engines or artillery bombardment to damage walls. Some soldiers use mining, which is also called sapping. In mining, attackers dig a tunnel beneath the foundations of a wall. They then collapse or explode the tunnel to make the structure fall. Other tools include ladders for climbing walls or battering rams for gates. Siege towers allow troops to reach the top of a wall with less danger. Machines like catapults, ballistae, trebuchets, mangonels, and onagers launch projectiles at defenders. 
History shows that sieges have been a constant part of warfare. In the ancient Near East, the Sumerian city of Uruk had famous walls. In the 15th century BC, the Shang dynasty in China built walls at Ao. These walls were 30 meters wide at the base. The walls enclosed an area of 20 square kilometers. In the 9th century BC, Hazael of Aram Damascus used a trench system to siege Gath. This is the earliest known example of a circumvallation system. In 701 BC, Sennacherib of Assyria besieged Lachish in Israel. This siege is documented in both archaeological remains and historical texts. 
If military force fails, sieges are often decided by survival needs. Starvation, thirst, or disease can afflict either the attacker or the defender. A siege can last many months or even years. This duration depends on the size of the food stores inside the fortification. In desperate times, defenders might eat horses, pets, or even leather from shoes. Attackers are also at risk because they live in squalid field conditions. They must rely on long supply lines for food. Disease can spread quickly through both the besieged and the besieging armies.
Technology has changed how sieges work over time. During the Renaissance, siege warfare dominated much of Europe. The thinker Leonardo da Vinci even designed new types of fortifications. However, the Napoleonic era brought more powerful cannons. These weapons reduced the value of traditional stone walls. In the 20th century, the significance of the classical siege declined further. Modern mobile warfare means a single stronghold is no longer as decisive. Today, huge volumes of destructive power can be directed at static targets from a distance. 
While large-scale sieges are less common now, they still occur in different ways. Modern sieges are often the result of smaller, intense situations. These might include hostage situations or militants resisting arrest. The core idea of the blockade remains, but the tools have changed. From the ancient mudbrick walls of the Indus Valley to modern artillery, the struggle to hold or take a fortified position remains a major part of human history.
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