Fanfic: All Along the Watchtower
All Along the Watchtower is an X-Men: First Class fanfic by NezumiPi about the relationship between Charles Xavier and Erik Lensherr. It goes AU in the later chapters, and has a heavy focus on Erik's experiences as a Holocaust victim.
The story can be found at 
This work contains examples of:
- Angst: So muuuuuuuch, mostly validated
- Character Development: Shines the spotlight on, by turns, Charles, Erik, Alex, Sean, and Raven.
- Flashback: Many parts of the story are backstory development for Charles and Erik
- Shell-Shocked Veteran: Erik is one, on a level consistent with his appearance in the movie.
- Slash Fic: Later chapters include Charles/Erik.