On the eleventh hour of the eleventh day of the eleventh month in 1918 the absolute horror of WW1 finally came to a close, the "war to end all wars." Unfortunately, the seeds were sown shortly thereafter, in part due to the Treaty of Versailles, for an even bigger war to erupt in 1939 in Europe and earlier in the 1930's when Japan attacked China. Read "The **** of Nanking" by Iris Chang which occured in 1937. The Japanese have never apologized for their war crimes of WW2 like the Germans have. "A Walk Along the Front" by Stephen O'Shea revisits the trenches from Switzerland to the coast of Belgium from WW1 and is a great read as well. I was able to visit Belgium and northern France in 2000 and walked some of these trenches and it was an unforgettable experience. Go and visit if you have an interest and get the chance as reading books is fine but being there is surreal.