The Centauri Republic learned that the Narn Regime was going to attack their supply depot on Gorash VII and cut their supply lines leading into Narn space, forcing a temporary stalemate. The first two seasons had many, many great space battles but the most emotionally draining one came at the climax of the Narn-Centauri War. Scepticism from more established shows (who preferred to use models, although they were more complicated, limited and expensive) was replaced by them rushing to embrace computer models after Babylon 5 pioneered the concept.
Babylon 5 was the first SF show to feature 100% CGI spaceship shots and space battles.
