A Pair of Aces and a Trey

1st Lieutenants William P. Erwin, Arthur E. Easterbrook, and Byrne V. Baucom: America's Top Scoring World War I Observation Pilot and Observers

Alan L. Roesler

The joint biography of three pioneering observation World War I airmen.
Date Published :
February 2023
Publisher :
Illustration :
Black and white images and color profiles
Format Available    QuantityPrice
Binding. : Hardback
ISBN : 9781636241876
Pages : 256
Dimensions : 9 X 6 inches
Stock Status : Not Yet Published. Available for Pre-Order


Trained as a pursuit pilot but assigned to an observation squadron, the indefatigable Bill Erwin flew twice as many hours over the front lines as any other pilot in the 1st Aero Squadron. His two primary observers, Byrne Baucom and Arthur Easterbrook, were both previously Army infantry officers and deadly marksmen. It was their dedication, bravery, and courage under fire that kept them alive throughout the Château-Thierry, St. Mihiel, and Meuse-Argonne campaigns. Easterbrook scored four of his five victories while flying with Erwin, including two in one day, while Baucom scored all three of his victories with Erwin. Even after returning in shredded Salmsons, being forced down, and shot down on multiple occasions, all three remained relatively unscathed throughout the war.

Erwin’s dramatic life culminated in his disappearance during the 1927 Dole Air Race, while Easterbrook became a repected figure in Washington. Revered in his home state of Texas, Baucom became a pilot in the 1920s and rose to become an instructor at an advanced flying school. He died in an aircraft crash in 1928. While Erwin became Dallas’s ‘favorite son’ in life, three thousand people paid tributes to Baucom at his funeral, showing his immense popularity. Easterbrook was the only one of the three to survive to reach his military career potential, retiring as a brigadier general after World War II. Alan Roesler retraces the lives and careers of the three men in this new joint biography.

About The Author

Alan Roesler is a military aviation historian. He has been a featured speaker at the U.S. Air Force Museum, Commemorative Air Force Museum, Sharlot Hall Museum, Embry-Riddle Aeronautical University, and Yavapai College.


Chapter One: William P. Erwin, Byrne V. Baucom & Château-Thierry Offensive Operations, July 1918
Chapter Two: Black Thursday—1st Aero Squadron and 1st Pursuit Group's Worst Day
Chapter Three: St. Mihiel Operations & Easterbrook's Arrival
Chapter Four: Meuse-Argonne Offensive Operations
Chapter Five: The Final Assault
Chapter Six: Postwar—Erwin's Early Return to Participate in America's Victory Loan
Chapter Seven: "Lone Star Bill”and the Dole Air Race
Chapter Eight: Career Accomplishments & Conclusions

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