I can't believe this hasn't been recced yet but Avengers of the Stalag (http://archiveofourown.org/works/774497/chapters/1454946) is a fucking amazing WW1 au.
Summary: Tony Stark is thrown into a new Nazi POW camp. It's his fifth--or sixth--and he'd really like to make it to his fiftieth escape attempt this time. But Stalag III isn't like any of the other POW camps he's been in. He suddenly finds himself facing an impossible task: Getting two-hundred and fifty men out of the camp in one massive escape attempt. And dammit if he's not going to make it work.
Loki's really cool in this fic and Peter Parker's in it too.
no subject
Summary:
Tony Stark is thrown into a new Nazi POW camp. It's his fifth--or sixth--and he'd really like to make it to his fiftieth escape attempt this time. But Stalag III isn't like any of the other POW camps he's been in. He suddenly finds himself facing an impossible task: Getting two-hundred and fifty men out of the camp in one massive escape attempt. And dammit if he's not going to make it work.
Loki's really cool in this fic and Peter Parker's in it too.