I'm currently studying to become a teacher, and I was looking online for a website that I remember being shown when I studied modern history at school, so that I can show it to my own students. However, I couldn't find it. The website is a map of the Nazi invasion of the Soviet Union in the Second World War, and the map displayed troop movements and battles throughout the period over time. The map changed to show these movements over time, and it had a sidebar that showed written information about each major event. I was wondering if anyone here might know where the website I'm talking about is?