Complex sentence: In the film, he is not killed immediately, and Éomer manages to find Théodred among the dead after a battle-later, he succumbs to his wounds, though it is hinted that Grima Wormtongue aided in his death.
Split into simpler sentences: In the film, he is not killed immediately, and Éomer manages to find Théodred among the dead after a battle. Théodred later succumbs to his wounds, though it is hinted that Grima Wormtongue aided in his death.