A big war happened long ago.
A very big war happened long ago.
Some people died in battles. Other people died from being hungry. Some people died from being sick.
Many people who were not in the army died too. This happened in many different lands.
Many people lived in big lands like China. Other people lived in the Soviet Union. Many lives were lost there.
It is hard to know the exact number of deaths. Historians study the past to learn more. We remember these people today.
World War II was a very large war. It was the deadliest war in history.
Many people died during this time. Experts think between 60 and 75 million people died. This was a big part of the world's people. Most deaths came from fighting or hunger. Some people died from sickness, too.
Many people were not in the army. These people are called civilians. Civilian deaths were very high. They reached about 50 to 55 million people. More civilians died than soldiers. 
Many lives were lost in the Soviet Union. More than half of all deaths were in China and the Soviet Union. In the Soviet Union, about 26.6 million people died. China says 20 million of its people died. It is hard to know the exact numbers. Historians study the past to find the truth. They use many different ways to count the losses.
World War II was a huge conflict. It was the deadliest military war in history. Experts estimate that between 60 and 75 million people died. This was about 3% of all people on Earth in 1940. Many people died from fighting between armies. Others died from hunger or sickness caused by the war.
Historians group deaths into different types. They look at military deaths and civilian deaths. Military deaths include soldiers who died in battle. This also includes prisoners of war who died in captivity. There were about 21 to 25 million military deaths. Civilian deaths were even higher at 50 to 55 million.
Counting these deaths is a very hard job. It is often called a controversial subject. Historians use different methods to find the numbers. Sometimes the numbers are not perfectly reliable. This is because different countries use different ways to count. Because of this, experts often give a range of numbers. 
Some countries lost many more people than others. More than half of all deaths happened in China and the Soviet Union. The Soviet Union lost about 26.6 million people. China says 20 million of its people died. Poland lost between 5.6 and 5.8 million people. Germany had about 5.3 million military deaths and missing men. 
War changes how we see the world's history. New research helps us understand these losses better. For example, research in Russia changed Soviet death estimates. Studying the past helps us learn about real people. It shows how much life changed during those years. We learn how people lived and how they were lost. 
World War II was the deadliest military conflict in human history. Experts estimate that between 60 and 75 million people died during this period. This number represents about 3% of the entire global population in 1940. These deaths were caused by many different factors related to the war. Some people died from direct fighting between military forces. Others died from deprivation, famine, and disease caused by the conflict.
Historians classify these losses into specific categories to understand them better. They distinguish between military deaths and civilian deaths. Military deaths include those killed in battle, or killed in action (KIA). This category also includes people missing in action (MIA). It includes deaths from accidents, disease, and prisoners of war (POW) who died in captivity. There were an estimated 21 to 25 million military deaths in total.
Civilian deaths were even more numerous than military deaths. Estimates suggest that 50 to 55 million civilians died. These deaths resulted from many different causes. They included strategic bombing and various war crimes. Many civilians also died during the Holocaust. Others died during population transfers in the Soviet Union. War-related famine and disease also caused massive civilian loss. 
Calculating these exact numbers is a very difficult and controversial task. Historians often provide different estimates for the same events. Casualty statistics are considered notoriously unreliable by some experts. This is because different countries use different methods to count. Some sources use official government figures. Other sources rely on academic historical research. Because of these differences, scholars often provide a range of numbers. 
Some nations suffered much higher losses than others. More than half of all deaths occurred in the Republic of China and the Soviet Union. The Soviet Union lost about 26.6 million people within its postwar borders. This includes 8 to 9 million deaths from famine and disease. The People's Republic of China estimates its war dead at 20 million. Poland lost between 5.6 and 5.8 million people according to researchers. 
Germany also experienced significant military losses during the war. Historian Rüdiger Overmans estimated 5.3 million German military deaths and missing men. This figure includes 900,000 men conscripted from outside Germany's 1937 borders. These men came from Austria and east-central Europe. The Red Army was responsible for the majority of Wehrmacht casualties. The Japanese government puts its own war casualties at 3.1 million. 
Famine played a massive role in the death tolls of certain regions. An estimated 7 to 10 million people died in various colonies. These were located in South and Southeast Asia. These colonies belonged to the Dutch, British, French, and United States. Most of these deaths were caused by war-related famine. This shows how conflict affects people far beyond the actual battlefields. These connections show how war impacts entire global systems.
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