They had no way of telling what lay before them; there was no sign of murder in the day or in the night as these Battle Aces sat talking in their Hangar. And then it came! — strange and ghastly, as though from another earth, and G-8 had no weapon other than his courage with which to fight! G-8 and his Battle Aces rode the nostalgia boom ten years after World War I ended. These high-flying exploits were tall tales of a World War that might have been, featuring monster bats, German zombies, wolf-men, harpies, Martians, and even tentacled floating monsters. Most of these monstrosities were the work of Germany's seemingly endless supply of mad scientists, chief of whom was G-8's recurring Nemesis, Herr Doktor Krueger.