Continuity mistake: When Enders gets shot numerous times at the end, he lies in a crater left from a shell. He begins to cough up blood, and it drips down the left side (as we look at it) of his mouth and chin. The view then switches to one behind him, facing Ben. There is no blood around his mouth or dripping down his chin. The view then changes back to the original one, and the blood's there again.
Question: I can understand why they would use code when talking about positions, objectives, etc. but when they call in the air strike from the battleships, what's the point of using code? Also, later in the film, when the same situation arises, they don't use the code. Seemed like it was just a silly way to introduce the whole premise for the movie.