I know this story they survived because they used rags of cloth blocking out some of the gas’s and it is heavy so it stayed close to the ground and the Russians managed to survive and there disfigured body’s terrified the young German soldiers who in the end tried to run from the based men who looked like they came from the dead Wich is why it is called THE RISE OF THE DEAD MEN it was not to be forgotten and was a truly famous battle may it live on.