Complex sentence: Kenney's hoped to get Boeing B-29 Superfortresses assigned to the Far East Air Forces so that, based from airfields near Darwin, they could destroy the Japanese oilfields at Balikpapan.
Split into simpler sentences: Kenney's hoped to get Boeing B-29 Superfortresses assigned to the Far East Air Forces. He hoped that, based from airfields near Darwin, they could destroy the Japanese oilfields at Balikpapan.