Slate has the word on this series of photos by Dutch photographer Clair Felicie entitled "Here Are The Young Men." The series depicts the face of 20 Dutch Marines before, during and after their tours in Afghanistan. Slate's Heather Murphy captured the feeling in the photos perfectly here:
What's interesting about this project is that you can convince yourself that someone changed dramatically from middle to right, only to compare right to left and talk yourself out of it. It must just be angle or lighting, you say. But even after you’ve concluded that wrinkle isn't really any bigger, it's undeniable that there is a difference. No this was not a perfectly controlled scientific experiment, but there is no science to walking into a room, looking into a friend's face, and immediately knowing that something has happened. It's not about the obvious clues like a frown or matted hair, but something far more nuanced.