Answer:
World War II was one of the deadliest conflicts in human history, with an estimated 70-85 million fatalities, including both military personnel and civilians. No other war since 1945 has reached the same level of total fatalities as WWII.
However, there have been several other conflicts that have resulted in a significant loss of life. For example, the Vietnam War, which lasted from 1955 to 1975, resulted in an estimated 1.3 to 3.8 million fatalities. The Korean War, which lasted from 1950 to 1953, resulted in an estimated 1.2 to 2.5 million fatalities.
More recently, the Syrian Civil War, which began in 2011, has caused an estimated 400,000 to 500,000 fatalities. The ongoing conflict in Yemen, which began in 2015, has resulted in an estimated 233,000 fatalities.
It's important to note that comparing the loss of life between different conflicts can be a difficult and sensitive issue, and estimates of fatalities can vary widely depending on the source and methodology used. Additionally, the impact of a conflict goes beyond just the number of fatalities, as it can also result in displacement, destruction of infrastructure, and long-term economic and social consequences.