Unternehmunger 25 was the code name for the German invasion of Yugoslavia, it was also known as the April War or Operation 25. Germany and her Italian and Hungarian allies invaded Yugoslavia on the April 6, 1941. With superior air power and forces from Germany and her allies, Yugoslavia capitulated and signed an armistice on the 17 of April 1941. Can your Yugoslavian forces hold on to Yugoslavia and break the vice grip hold of the Axis powers? This print and play game gives you six turns to do just that.