In the beginning Superman can be seen from above bearing a tank, but a few moments after this he lands with the plane that he grabbed by the bridge at the end of Part I.
The red armband Savage wears continually appears and disappears while he interrogates J'onn.
Green Lantern is not wearing his ring in the first two shots when he is thrown into the cabin and tortured by Savage. It then appears on his right hand, only to disappear and appear throughout the rest of the scene.
When Wonder Woman lasso's the Nazi it's wrapped around him four time then it's only one.
When Wonder Woman and J'onn J'onzz first meet Steve Trevor he's caring a revolver now he has automatic.
On Blackhawk island, while Superman, Hawkgirl and Flash look at reconnaissance photos of a factory, directly behind them is a map showing Japan and North and South Korea. However, North and South Korea were not divided until 1948, three years after the end of World War II.