In the alternate timeline, Bruce Wayne's resistance includes cameos of Dick Grayson, Barbara Gordon, Tim Drake, and an uncredited cameo of Cassandra Cain. Dick and Barbara's kiss shows that they are in a relationship.
The majority of the Savage Time three-parter takes place in World War II. During the actual WWII, Superman and Batman were involved in many pro-America propaganda comics. Wonder Woman was also created during this era.
Unlike his real self, the alternate timeline's Batman has no qualms about using firearms.
According to writer Stan Berkowitz, Savage is leading Germany to victory partly because he focused more on the war than the holocaust Hitler had been carrying out.
The giant wheel fighting vehicles are War Wheels; a recurring enemy of the Blackhawks.