Custom Wall Maps Perfect For Teaching Tools

I teach history in high school and in particular, I teach United States history. My personal favorite era that I am always excited to teach is the World War 2 era. It is such a defining period for our great nation, but not only our country, but for the world as well. What could have happened if the Allies were unable to wrest victory from what seemed like an unstoppable German war machine? Who knows what could have happened. But more to the point, because I enjoy this era so much, I am planning on getting some custom wall maps done of the D-Day invasion, showing each step of the liberation of France and so on. I think this kind of visual representation will make it more interesting for my students.