Complex sentence: In 1945, United States and Philippine Commonwealth forces working with Maranao guerillas occupied Malabang, after a siege, In the Siege of Malabang, the guerillas used weapons like the Maranao kris, barong and kampilan to fight the Japanese forces.
Split into simpler sentences: In 1945, United States and Philippine Commonwealth forces, working with Maranao guerillas, occupied Malabang after a siege. During the siege of Malabang, the guerillas used weapons like the Maranao kris, barong and kampilan to fight the Japanese forces.