In 1914 Europe blundered into a war that shaped the 20th century. The Central Powers started the war with huge professional armies and some of the best military technology in the world yet rapidly became locked in stalemate on the Western Front in trench warfare. Even on the Eastern Front, where the war was more mobile little gain was made against Russia until the internal destruction of its government was brought about by the revolution.
What were the fundamental mistakes made by Germany and her allies that resulted in their defeat in 1918?