Hey Regulus,
Frank Luke's first confirmed victory was September 12, 1918. He died on September 29, 1918. He used four days of a weeks leave in Paris during that time. He shot down eighteen enemy aircraft in about seventeen days, not counting his leave. Five of those kills were in about fifteen minutes (two balloons and three planes).
Edward Rickenbacker said this: ""He was the most daring aviator and greatest fighter pilot of the entire war. His life is one of the brightest glories of our Air Service. He went on a rampage and shot down fourteen enemy aircraft, including ten balloons, in eight days. No other ace, Britain's Bishop from Canada, France's Fonck or even the dreaded Richthofen had ever come close to that."
Dan S