I have been searching for George F. Nafziger's works on the German Army during World War II. I had all of them in PDF format at one time, but that computer died and I lost all of them. In my search for them I discovered the Ike Skelton Combined Arms Research Digital Library
. This is a great resource for any topic dealing with the history of the US military. Those of you that are interested in the American Civil War will find many of Nafziger's publications dealing with that conflict here. I have not explored this vast library in any depth but it definitely looks like an excellent resource for anyone interested in designing scenarios dealing with the United States military. Here is the link.