When only a few of the explosives go off they do so of right at the back of the train, yet later when they stop because of the advancing German army there are considerably more carriages behind the destroyed one.
When the train is leaving the secret base one shot shows the old soldiers on the side nowhere near the cave entrance, yet in the next shot the train is still leaving the cave.
Throughout the episode Zoltan speaks with an Eastern European accent. However, at 40:41, Zoltan speaks with the actor's real Australian accent.