Armageddon Now: Part 1 - S4-E13
Character mistake: Callisto's sword is missing. When she appears in the Xena Season Three finale "Sacrifice", her sword has reappeared. It is never explained why Callisto doesn't have her sword during her three appearances on Hercules the Legendary Journeys.
Answer: Because most Americans are more familiar with the name Hercules. The show, as I recall, wasn't exactly true to the original Greek mythology anyway.
Brian Katcher