alternatehistory.com

To be more specific, here are the conditions I'm looking for.

1. It's a brutal attrition war that has little progress for years at a time on any front.

2. It's much grayer. No Holocaust, and both sides must be equal in regards to their willingness to commit massacres.

3. It causes the same disillusionment that World War 1 did with the political establishment.

That is it. Can you accomplish that?
Top