When Carter and Bonnard are up on the hill, looking out over the village, they are shown from the rear standing about 2 feet apart. The camera angle changes and they are shoulder to shoulder.
About an hour into the movie, Carter looks at the watch of a German officer and it is 11:20. The dialogue between Carter and the officer continues for the next minute or so and there is no indication that extra time had lapsed. The watch is shown again and it suddenly 11:30.
When Carter and Bonnard view the factory from the hillside, there are five small smokestacks and one large smokestack. Later, the factory is shown with six small smokestacks and one large smokestack. During the bombing raid, there are five small smokestacks, and then six again.