Complex sentence: On the last mission, the third aircraft, commanded by Captain John Butterfield, was seriously damaged by ground fire, and although he managed to land the aircraft at Chu Lai, the aircraft was a total loss due to a warped wing spar.
Split into simpler sentences: On the last mission, the third aircraft, commanded by Captain John Butterfield, was seriously damaged by ground fir. Although he managed to land at Chu Lai, the aircraft was a total loss due to a warped wing spar.