This is basically nightmare fuel. I don't know where it's from. I used to have a bookmark to it, but the site hosting it took it down. But I found it again today (3:00 AM) while doing some researching (pornography). Now I will have it for. ev. er. Download it as you see fit, but I'm pretty sure seven days from seeing it, you die.
The horror. The horror. But for serious, you are my new hero for solving this mystery. You win 100 internets.
I just found out, this is from a movie called “March of the Wooden Soldiers” (cf http://www.youtube.com/watch?v=MoBmFotd_s8)