Continuity mistake: At the security meeting, just as Captain Lochley is saying "I agree with Sheridan", she is shown in a long shot uncrossing her arms and starting to move forward. The camera goes to a close-up of her, and she once again is shown uncrossing her arms and starting to walk forward.
Continuity mistake: On Centauri Prime, Londo has an audience with the demented Regent. In the initial shot, the babbling Regent holds both hands up near his face as he speaks. In the very next, reverse-angle shot, his hands are down at his sides. When it cuts back, his hands are up again.
Continuity mistake: As the Earth loyal ships exit the jumpgate, the force consists of two destroyers and two cruisers. However Babylon 5 and the renegade ships destroy three destroyers and the battle is won. There is no sign of the cruisers through the entire battle.