When Jean and Nelly have their picture taken, they are standing close together. After a brief cut to the photographer who instructs them not to move anymore, there is a clear gap between them.
As the truck approaches Le Havre, Jean's cigarette is at full length in the shot from outside the truck, but in the close-up it has instantly changed into a butt.
When Lucien pulls a gun on Zabel, after the cut to another angle the four men are suddenly standing at different positions.