Merlin's Travels (An Untimely Error) (Volume 2)

The wizard Merlin is fighting for the Allies in WWII. German Air superiority threatens the Allied forces and Merlin discovers a way to counteract it. Ave, the insane dragon, has imprisoned a large number of dragons behind a magical portal. Unfortunately, the portal lies in the Harz mountains in the heart of Germany. The SS guard the areas that Merlin must travel through to get there, and Merlin will need to wrest control of the portal from Ave herself should he make it through the SS. The Allies are hard pressed by the German domination of the skies over Europe and the fate of the war is at stake. Merlin may be able to threaten the German air superiority, if only he can rescue the dragons and convince them to join the Allied forces.