Dungeons & Dragons (1983)

S3E2 The Time Lost

Venger devises a fresh scheme to rid himself of his bothersome young foes by using his Crystal of Chronos to bring a high-tech aircraft and a WWII Nazi fighter pilot into the Realm. His goal is to send Josef Mueller back to Earth to ensure victory for Germany in the war. However, after encountering the kids, Josef starts to reconsider his mission and contemplates a different path.