In 1917, use of a chemical agent known as "Yellow King" by the German army in the trenches at Ypres results in numerous deaths as well as the first cases of "walking dead" resuscitated by the strange properties of the gas.

New World OrderSeveral months later the first super-humans begin to appear on the battlefields as well, altered in unusual manner by exposure to the noxious gas.

The armistice ends with a re-drawn political map and the formation of the League of Nations, which institutes a league of super-humans to help enforce its polices, these teams are formed of veterans of the Great War opposed to future conflicts like the one which nearly destroyed Europe. Their secondary purpose is to contain the restless dead who still run free in devastated Europe.