A casualty is a person in a hard time. 
A casualty is a person who cannot do their job. 
In the military, this can happen for many reasons. A person might get sick or hurt. They might also be missing or taken by others.
Some people are called battle casualties. This means they were hurt during a fight. Others are not from a fight. They might just be sick.
People who are not in the military can be casualties too. This can happen during a big disaster. 
It is important to know these numbers. It helps leaders know who can still work.
A casualty is a person who cannot do their job. In the military, this word has been used since 1513. A soldier becomes a casualty if they are killed or hurt. They might also be sick or missing. Some soldiers are captured by others. Others might desert, which means they leave their unit. 
NATO uses special names for these people. A battle casualty is hurt during a fight. A non-battle casualty is lost due to sickness or other injuries. Some people are called medical casualties. These are people who need care in a hospital. Some are killed in action by enemy forces. Others are missing in action. This means they were lost during a fight. 
Civilians can be casualties too. This word has been used for civilians since 1844. A civilian casualty is a person not in the military. They might be hurt or killed by military action. The word can also describe people hurt in a big disaster. It does not just mean people who died. It includes anyone with a bad injury.
A casualty is a term used to describe a person who is unavailable for duty. In the military, this usually means a person can no longer take part in a battle or a campaign. This can happen for many different reasons. A person might be killed or injured during a fight. They might also become sick or suffer from psychological trauma. Sometimes, a person is captured by an enemy or goes missing. Even desertion, which is leaving a unit without permission, makes someone a casualty. 
Military groups use different names to group these people. NATO uses very specific definitions to stay organized. A battle casualty is someone hurt by hostile action during a mission. A non-battle casualty is someone lost to their group due to disease or other injuries. There are also medical casualties. These are people who are hurt by combat or sickness and need hospital care for more than one day. Some historians also use the term irrecoverable casualty. This refers to someone killed or missing before they could reach a medical station.
People have used this word in a military way for a long time. The Oxford English Dictionary shows the word was used for military casualties in 1513. This is over five hundred years ago. Later, the word began to be used for civilians in 1844. In civilian life, a casualty is someone hurt or killed by a violent event or a disaster. People sometimes think it only means people who died. However, it also includes people who have non-fatal injuries. 
There are many ways to classify what happens to a person. A person killed by an enemy is called killed in action. A person who is reported missing during combat is missing in action. This could mean they were killed, wounded, or taken as a prisoner of war. Sometimes, people are also called collateral damage. This is a different way to talk about civilians who are hurt or killed by military forces. It is a way to describe these events using more formal words.
Understanding these terms helps us look at history and big events. For example, the World Health Report in 2004 looked at how many people are hurt each year. It estimated that unintentional injuries caused about 6.2 percent of all deaths. Intentional injuries, like war or violence, accounted for about 2.8 percent of deaths. These numbers help us see how different events affect people around the world. Knowing these words helps us read about the past more clearly.
A casualty is a term used to describe a person who becomes unavailable for duty. In military contexts, this definition is very specific. It refers to a person in service who can no longer participate in a battle or campaign. This status can happen for many different reasons. A soldier might be killed or wounded by an enemy. They might also become ill or suffer from psychological trauma. Other reasons include being captured, going missing, or desertion. Desertion is when a person leaves their unit without permission. 
Military organizations use specific categories to track these people. The North Atlantic Treaty Organization, or NATO, uses precise definitions. A battle casualty is a person lost due to direct hostile action. This includes injuries sustained during combat or while traveling to or from a mission. A non-battle casualty is a person lost to their organization for other reasons. This includes death or injury caused by disease. It also includes people who go missing for reasons not caused by enemy action.
There are also specific terms for medical situations. A medical casualty is someone incapacitated by wounds or disease in a combat zone. To be a medical casualty, the person must stay in a medical facility for more than one day. Historians often distinguish between combat and non-combat medical casualties. Combat medical casualties result directly from fighting. Non-combat medical casualties result from other causes. Some historians also use the term irrecoverable casualty. This refers to a person killed or missing before they can reach a medical station.
Military history provides many ways to classify what happens to personnel. A person killed by the actions of hostile forces is called killed in action. If a person is reported missing during combat operations, they are missing in action. This status is uncertain. The person may have been killed, wounded, or taken as a prisoner of war. A prisoner of war is someone captured and held in custody by hostile forces. A person who suffers an injury from hostile forces is described as wounded in action. 
The term has a long history in human language. The Oxford English Dictionary shows the word was used for military casualties in 1513. It has been used in a military context for over five hundred years. By 1844, the word began to be used in civilian life. In civilian usage, a casualty is a person killed or wounded by a violent incident or disaster. People often mistake the word to mean only fatalities. However, the term also includes people who suffer non-fatal injuries.
Civilians are also affected by military conflicts. A civilian casualty is a civilian killed or wounded by military action. Sometimes, these people are referred to using the expression "collateral damage." This is a euphemism, which is a milder way of describing something difficult. Understanding these distinctions helps researchers track the impact of wars. It allows them to separate the losses of soldiers from the losses of the people living in those areas.
Global health data helps us see the scale of these events. The World Health Organization released a report in 2004 regarding injuries. This report estimated that intentional injuries caused 2.8% of all deaths. These intentional injuries include war, violence, and suicide. The report also estimated that unintentional injuries caused 6.2% of all deaths. These numbers show how different types of events affect the global population. Studying these statistics helps us understand the human cost of various historical and modern events.
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