There are rules for war. 
There are rules for war. 
Breaking these rules is called a war crime. It means people did not follow the laws of war. Some people hurt those who were not fighting. This includes civilians and prisoners.
Leaders have made rules for a long time. They want to stop unfair things from happening. These rules say people should not use certain weapons. They also say people should be kind to those who give up.
Special courts help find people who break rules. These courts try to make things right. They help the world follow the laws.
Rules help people during hard times. They show us how to be fair.
War has rules. These rules are part of international humanitarian law. They aim to protect people during a fight. When soldiers break these rules, it is called a war crime. 
War crimes include many bad acts. Some acts involve hurting people who are not fighting. This includes civilians and prisoners of war. Other crimes include taking hostages or using children in the military. Some rules also ban certain weapons. For example, chemical and biological weapons are not allowed.
People have worked to make these rules for a long time. The Hague Conventions helped set rules for war. Later, the Geneva Conventions made more rules. These rules say that people who surrender must be treated well. 
After World War II, special courts were held. The Nuremberg Trials helped define what a war crime is. Today, international courts still work to hold people responsible. These courts help make sure that those who do wrong face justice. 
War crimes are very serious violations of the rules of war. These rules are known as international humanitarian law. They are meant to guide how people act during a fight. When someone breaks these laws, they can be held responsible for their actions. This responsibility is part of international law. It means that individuals, not just countries, can be punished. 
There are many different ways a war crime can happen. Some crimes involve hurting people who are not fighting. This includes attacking civilians or taking them as hostages. Other crimes include the mistreatment of prisoners of war. Some rules also ban the use of certain weapons. For example, chemical and biological weapons are not allowed. It is also against the rules to use a flag of truce to trick an enemy. This act of trickery is called perfidy. 
People have been writing these rules for a long time. In 1863, the Union Army used the Lieber Code during the American Civil War. Later, the Hague Conventions of 1899 and 1907 set rules for international war. The Geneva Conventions of 1899 also helped define new crimes. In 1949, new rules were made to protect victims of conflict. These rules say that people who surrender must be treated well. 
History shows us how these laws are used in court. After the Second World War, the Nuremberg Trials were held. These trials helped create the Nuremberg principles. These principles define what a war crime is. The Tokyo Trials also looked at crimes like the attack on Pearl Harbor. In recent years, the International Criminal Court has been very active. In 2016, this court convicted someone for sexual violence. This was a major step for the court. 
Understanding war crimes helps us see how the world tries to stay fair. Even in a fight, there are limits to what is allowed. These laws try to balance military necessity with human safety. For example, a soldier might attack a military target near a farm. This is allowed if the farmer is not the actual target. However, hurting innocent people for revenge is never permitted. These rules help protect the world even during difficult times. 
A war crime is a serious violation of the laws of war. These laws are also called international humanitarian law (IHL). They provide a set of rules for people fighting in armed conflicts. When these rules are broken, individuals can be held criminally responsible. This means that single people, not just entire nations, can be punished under international law. 
War crimes involve many different types of harmful actions. Combatants may commit crimes by intentionally killing civilians or taking hostages. Other examples include torture, pillaging, or the conscription of children into the military. Some crimes involve the use of deception, which is called perfidy. Perfidy occurs when a person uses a flag of truce to trick an enemy during an attack. Additionally, the use of chemical and biological weapons is prohibited by several international agreements. 
There are specific rules regarding how soldiers should behave during combat. For instance, the 1907 Hague Convention forbids punishing enemy spies without a trial. The Geneva Conventions also provide protections for people who are no longer fighting. Protocol I of the Geneva Conventions forbids attacking parachutists who have ejected from a disabled aircraft. It also protects those who have landed after surrendering. While wearing enemy uniforms for espionage is a legitimate ruse, using them to fight or assassinate people is unlawful perfidy. 
The formal concept of war crimes has developed over many years. In 1863, the Union Army used the Lieber Code during the American Civil War. Later, the Hague Conventions of 1899 and 1907 established rules for international warfare. The 1899 Geneva Conventions also helped define new war crimes. These rules allowed states to exercise universal jurisdiction over criminals. In the late 20th and early 21st centuries, international courts expanded these definitions to include civil wars. 
History shows how these laws are applied in international courts. After World War II, the Nuremberg and Tokyo Trials were held to judge leaders. These trials established the Nuremberg principles, which define war crimes clearly. The Tokyo Trials ruled that the attack on Pearl Harbor was a war crime. This was because the attack went beyond military necessity and occurred while the nations were at peace. More recently, the International Criminal Court has handled new types of cases. In 2016, the court convicted Jean-Pierre Bemba Gombo for sexual violence. 
Sometimes, there is debate about whether certain actions are war crimes. This is often called "victor's justice" when only the losers are punished. For example, the Allies did not prosecute German leaders for bombing cities like Warsaw or Rotterdam. They also did not prosecute the Japanese for attacks on Chinese cities. During World War II, there was no specific treaty protecting civilians from aircraft attacks. Therefore, the strategic bombing of cities like Dresden or Tokyo was not officially ruled a war crime. 
Modern law tries to balance military necessity with the protection of people. Military necessity allows for the destruction of targets that are essential to war. For example, an attack on an ammunition depot is allowed even if a farmer is nearby. The farmer is not the object of the attack, so the action may be permissible. However, killing innocent people for revenge is never allowed. The law seeks to prevent unnecessary suffering and to protect those who are not participating in the fight.
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