Complex sentence: His first act is to allow the usage of an army of cloned human warriors that were discovered by Jedi Knight Obi-Wan Kenobi to counter the Separatist threat, resulting in a battle on Geonosis that serves as the opening salvo of the Clone Wars.
Split into simpler sentences: His first act is to allow the usage of an army of cloned human warriors that were discovered by Obi-Wan Kenobi to counter the Separatist threat. The resulting battle on Geonosis serves as the opening salvo of the Clone Wars.