[1] His most notable victory saw him shoot down an enemy aircraft that crashed into another, giving Sims a double win.
[2] Sims entered the Royal Naval Air Service as a probationary flight officer with seniority from 24 October 1917.
Flying a Sopwith Camel single-seat fighter he was diligent in trench strafing and ground support missions.
His final tally was a balloon and four German aircraft destroyed solo, two shared with other pilots, and two driven down out of control.
He finally presented his thesis in October 1925 and was awarded a Diploma of Imperial College for advanced study and research.