Shadow Warriors

Since 1914 the trenches have been swamped by an unstoppable tide of blood sacrifice, but what if a greater evil were to enter the battlefield and place the very future of humanity on a knife edge? And what if this imminent fate could only be stopped by a powerful Cheyenne shaman, a mighty Iroquois fighter, a Scottish marksman prone to drink, a Basque grenadier devoted to his chistera, a Senegalese Tirailleur cum voodoo priest and a nun whose talent is retrocognition? And what if they were to band together to form a special unit known as the Shadow Warriors?