Frank Luke, the Balloon Buster of the Meuse, and the Seventeen Days That Made the Most Efficient Ace in American History

Frank Luke Jr. destroyed 14 observation balloons and 4 enemy aircraft in 17 days during September 1918, making him the most efficient combat ace in the history of American aviation. He was 21 years old when he was killed on September 29, 1918, near the village of Murvaux, France, and received a posthumous Medal of Honor - the first ever awarded to an aviator.

Who Was Frank Luke?

Luke grew up in Phoenix, Arizona, the son of a German immigrant. He was large, athletic, and shaped by the self-reliance that came with wide-open desert country - self-reliance that translated, in the Army Air Service, into a near-total indifference to military hierarchy.

He reported to the 27th Aero Squadron in the Toul sector in the summer of 1918, and he arrived talking. He told the veterans what he intended to accomplish. The men who had been living alongside death for months had a quick nickname for him: the Arizona Boaster. It was not meant kindly. He hadn’t shot anything down yet.

The Saint-Mihiel Offensive Changes Everything

September 12, 1918 - opening day of the Saint-Mihiel offensive, one of the first major American-led operations of the war. The sky over the Meuse was crowded with aircraft. Frank Luke climbed into his Spad 13 and went after an observation balloon.

That run changed everything.

Why Observation Balloons Were the Most Dangerous Target in the Sky

German Drachen observation balloons hung at roughly 1,000 to 1,500 feet, tethered fat sausage shapes with a spotter inside holding a telephone connected directly to the artillery batteries below. Those spotters directed fire in real time - watching shells land, calling corrections, walking rounds onto infantry. Kill the balloon, and German artillery went blind.

The Germans understood exactly what those balloons meant, and they protected each one accordingly. Anti-aircraft batteries ringed every site. Dedicated fighter patrols hunted anything approaching. Machine gun positions covered the exit routes at low altitude.

Reaching the balloon meant flying through all three defensive layers. Hydrogen-filled envelopes didn’t always ignite from distance - incendiary rounds had to go directly into the envelope, which meant getting close. Fifty yards. Sometimes less. Then a hard break before the fireball engulfed the airplane.

Balloon-busting specialists had short careers. The best ones stopped going back for more. Luke kept going back.

The Partnership with Joe Wehner

Luke found his footing alongside Joe Wehner, a quiet, methodical pilot from Massachusetts. Wehner was everything Luke wasn’t - still where Luke was motion, deliberate where Luke was instinctive. In the air over the Meuse, the combination worked precisely because of those differences.

The system was straightforward. Luke made the attack run, low and fast, threading through anti-aircraft fire directly at the balloon. Wehner flew high cover, holding German fighters off Luke’s tail long enough for the attack to land and Luke to get clear.

Balloons started burning with regularity. September 12. September 14. September 15. Then three in a single evening, the sky going orange over the river one after another. The veterans who had dismissed Luke started watching him differently. What they saw wasn’t recklessness. He had a natural grasp of angles and defensive fire patterns that resisted easy explanation, and he was threading attacks that should not have worked but consistently did.

By mid-September he was a confirmed ace many times over.

Friction with Command

Luke was difficult to manage. He reported late, filed incomplete paperwork, and made it hard for his commanding officer, Major Harold Hartney, to maintain any orderly oversight. Hartney spent September caught between the impulse to discipline him and the recognition that what Luke was doing to the German balloon network was materially affecting the ground campaign.

The Air Service submitted Luke’s name for the Medal of Honor. The paperwork moved through channels. The task was keeping him alive long enough for it to clear.

September 18: Wehner Is Killed

On September 18, 1918, Luke was on another balloon run with Wehner flying top cover. German fighters - the Jagdstaffeln - found a gap, and in the engagement that followed, Joe Wehner was shot down and killed.

Luke survived. He flew back to the field. He kept going after balloons. But the structured rhythm of the partnership was gone. He began disappearing from the aerodrome without filing intentions, landing at other fields to refuel, failing to report back. Hartney’s efforts to bring him in produced nothing.

He was 21 years old, carrying something with no name for it, still going after the most dangerous targets on the Western Front every time he could get airborne.

September 29, 1918: The Final Mission

September 29, 1918. Late afternoon. Luke took off from the aerodrome at Rembercourt without orders.

He flew over the village of Murvaux and dropped a handwritten note announcing he was going after the three Drachen balloons visible to the north. Whether it was a declaration, a goodbye, or simply the habit of a man who had stopped distinguishing between the two, historians have never fully resolved.

He found the first balloon. Set it on fire.

He came around to the second. The sky around his Spad was dense with anti-aircraft bursts and tracer streams, every gun in the sector tracking a single airplane. He put incendiaries into the second balloon.

He came around for the third. Third balloon burning.

His Spad was hit multiple times. The Hispano-Suiza engine was losing power and overheating. The airframe had damage it had no business surviving. He was too far from friendly lines to nurse it back to Rembercourt.

He brought the plane down in a field near Murvaux. French villagers had come outside to watch - they had seen the entire sequence from below, three balloons destroyed in succession by one airplane flying through fire that should have killed it three separate times.

The pilot climbed out of the wreckage. He was wounded. He walked to a stream near the field and bent down to drink from it.

A German patrol arrived. They ordered him to surrender.

He drew his service pistol and fought with what he had left.

Frank Luke Jr. was killed there, by that stream, on September 29, 1918. He was 21 years old.

Legacy: The Medal of Honor and a Name on a Base

The Medal of Honor was awarded posthumously. Frank Luke became the first aviator in American history to receive the decoration and remains, to this day, the only American airman from the First World War to hold it. His citation describes attacks carried out with “daring bravery” and “complete disregard of personal danger.”

Eddie Rickenbacker, who finished the war with 26 kills as the American ace of aces, called Frank Luke the greatest fighter pilot the United States produced in the conflict. Rickenbacker was not generous with assessments of that kind.

Luke Air Force Base, outside Phoenix, carries his name. Arizona placed a statue of him in the National Statuary Hall of the United States Capitol - one of two statues each state is permitted to install in that hall. A piece of marble in the most formal room in American government represents a 21-year-old from the desert who had seventeen days in him and used every one of them.

There is a monument at Murvaux today. Pilots who have made the drive out to find it tend to come back quiet.

Key Takeaways

• Frank Luke Jr. destroyed 14 observation balloons and 4 aircraft in 17 days in September 1918, making him the most efficient ace in American aviation history.
• German Drachen observation balloons were among the most heavily defended targets of the war, requiring attackers to fly through stacked anti-aircraft fire, fighter patrols, and low-altitude machine gun positions.
• Luke’s attack-and-cover partnership with Joe Wehner drove his success; Wehner’s death on September 18 preceded Luke’s final unauthorized mission by eleven days.
• On September 29, 1918, Luke destroyed three balloons in a single sortie before being shot down near Murvaux, France, where he refused capture and was killed.
• Luke was the first aviator to receive the Medal of Honor and remains the only American airman from WWI to hold it; Eddie Rickenbacker called him the greatest American fighter pilot of the war.