How many people have died in every single war altogether?

The exact number of people who have died in every single war throughout history is difficult to determine with precision, as many conflicts have occurred without complete and accurate record-keeping, and estimates can vary depending on different sources and methodologies used. However, some estimates provide a general idea of the magnitude:

1. The Uppsala Conflict Data Program (UCDP) estimates that between 500,000 and 1 million people have died in war-related violence around the world since the end of World War II in 1945.

2. According to the World Bank, an estimated 191 million deaths have occurred due to wars and armed conflicts between 1950 and 2005. This number includes both civilian and combatant casualties.

3. Historian R. J. Rummel estimated that over the course of the 20th century, approximately 165 million people died as a result of direct or indirect war-related causes, including battle deaths, massacres, and deaths due to war-induced famine and disease.

4. The Peace Research Institute Oslo (PRIO) estimates that between 1.3 million and 1.8 million people died in armed conflicts around the world between 1989 and 2008.

It's important to note that these figures are estimates and may vary based on different definitions of "war" and "battle-related deaths," as well as the accuracy and completeness of available data. Additionally, ongoing conflicts may lead to changes in these estimates over time.