Complex sentence: Ozawa survived and transferred his flag to the light cruiser By this point in the war, the Japanese Navy was hampered by a lack of fuel and experienced pilots, allowing for the battle to be one-sided.
Split into simpler sentences: Ozawa survived and transferred his flag to the light cruiser. By that point in the war, the Japanese Navy was hampered by a lack of fuel and experienced pilots, and thus the battle would be one-sided.