The First World War, which raged on for four years (1914-1918), was undoubtedly one of the most significant events in modern history, profoundly altering the world and leaving a trail of consequences. The most tragic consequence of this conflict was the immense loss of life. France, having sacrificed nearly 1.4 million soldiers and 300,000 civilians, endured a devastating toll, while more than 1.8 million Russian soldiers and 1.5 million civilians perished. In total, amongst 10 and 16 million lives were claimed by WWI. Nevertheless, the numbers related to the death toll remain the subject of debate.