Answer: Militarism could have cause the war due to the naval and arms race. The main event of Militarism causing World War one was the naval rivalry which was made after 1900. Britain had the most powerful navy in the world. The new Keiser Wilhelm announced his intention to build a bigger German navy than Britain. Britain felt very threatened by this. Germany’s navy was much smaller than Britain’s navy but the British army was put all over its colonies so they can be protected. Germany didn’t have a big Empire like Britain but most people agreed, at the time, they were the best trained and the most powerful. The Kaiser felt he needed a bigger navy than Britain to protect its country.