The document discusses how the era of total war in the early 20th century led to mass devastation and long-term consequences. It provides examples of propaganda cartoons from both sides during World War 1 and 2, showing how each side blamed the other for war atrocities. Statistics are given for the enormous casualties estimated between 10-31 million in World War 1 and 60-80 million in World War 2, demonstrating how technological advancements escalated the destruction during this period of total war.