Nationalism in World War 1. Filed Under: Essays Tagged With: nationalism, world war i. 2 pages, 587 words. Nationalism held a huge part in world war1 as it does in many wars. A major part of nationalism in world war1 is shown through Otto van Bismarck. Bismarck was a very tactical man and was great at thinking up strategies. It seemed he would do all he could to promote Germany and make it.