Operation Tidal Wave, the Low-Level B Twenty-Four Raid on the Ploesti Oil Refineries, August First, Nineteen Forty-Three

SUMMARY: How 178 B-24 Liberators struck the Ploesti oil refineries at 50 feet on August 1, 1943 - and why the raid became one of the costliest missions in Army Air Forces history.

On August 1, 1943, 178 Consolidated B-24 Liberator bombers launched from the Libyan desert to attack the Ploesti oil refineries in Romania at treetop height - as low as 50 feet. Codenamed Operation Tidal Wave, the low-level raid targeted a refinery complex that supplied close to one-third of Germany’s liquid fuel. It became one of the most heavily defended and costly single missions the U.S. Army Air Forces ever flew: more than 50 bombers were lost and over 500 airmen were killed, captured, missing, or wounded.

Why the Allies Targeted Ploesti

By the summer of 1943, Allied planners had concluded that you don’t defeat a mechanized enemy by destroying one tank at a time - you cut off the fuel. A huge share of the oil feeding the German war machine flowed out of one place: Ploesti, Romania, where sprawling refineries cracked crude into the gasoline that ran German tanks, trucks, and fighter aircraft.

Estimates put Ploesti’s contribution at close to one-third of the liquid fuel Germany needed to keep fighting. Shut it down, and the entire war effort would begin to falter.

The obstacle was distance. Ploesti sat far from any Allied airfield. The bombers would launch from the desert near Benghazi, Libya, cross the Mediterranean, climb over mountain ranges, and press deep into occupied Europe - a round trip of roughly 2,700 miles, comparable to flying most of the way from New York to Los Angeles and back, in a piston-engine bomber, over water and enemy territory the entire way.

Why the B-24 Liberator Was Chosen

The airplane for the job was the Consolidated B-24 Liberator. It never earned the affection reserved for the B-17 Flying Fortress - its slab-sided fuselage and high Davis wing led crews to joke it was “the crate the Fortress came in.”

But the Liberator flew farther and carried more. For a mission measured in thousands of miles, range was everything, and that made Ploesti a Liberator job from the start.

The Low-Level Plan and How Crews Trained for It

The entire operation hinged on going in low. The concept was to slip beneath German radar, strike the refineries with pinpoint accuracy from treetop height, and be gone before the defenses could react. Surprise was the whole strategy.

To prepare, crews built a full-scale mock-up of the target in the Libyan desert and practiced diving these 30-ton bombers down to the deck, running in on the refineries like fighter pilots. Airmen trained for years to bomb from 20,000 feet were now learning to attack from the height of a grain silo. In practice - with no one shooting back - many called it the most fun they’d ever had in an airplane.

What Went Wrong on the Way to the Target

The plan began unraveling within an hour of takeoff on the morning of August 1, 1943.

A lost lead ship. The lead navigator’s aircraft went down in the Mediterranean shortly after departure, taking with it one of the men who knew the route cold.
Enforced radio silence. To preserve surprise, crews could not talk, leaving no easy way to resolve confusion in the air.
Separation over the mountains. Formations climbed into towering clouds, strung out, and lost the tight timing the plan depended on.
A wrong turn at the wrong town. A lead group turned too early at the wrong checkpoint, and much of the force followed. Part of the formation ended up bearing down on Bucharest, the capital, instead of the refineries. Correcting the error meant breaking radio silence out loud - surrendering the surprise they’d guarded all the way from Africa.

By the time the bombers pointed themselves at Ploesti, the defenses were fully alert.

What the Defenses Were Like at 50 Feet

Ploesti was ringed with hundreds of antiaircraft guns - heavy and light, some hidden in haystacks that dropped away to reveal their barrels. There was even a flak train: guns mounted on railroad cars that ran alongside the bombers and fired into them from the side. Barrage balloons trailed cables meant to slice off a wing, and German and Romanian fighters climbed to meet the attackers.

At 50 feet, flak was not a distant black cloud to fly through and pray. It was a knife fight. Gunners and bomber crews fired at each other muzzle to muzzle. Refineries were already burning as later groups arrived out of order and from the wrong directions, some flying through walls of fire and smoke laid down by the aircraft ahead of them. Delayed-fuse bombs dropped by earlier bombers detonated under those that followed.

The Medal of Honor Story at the Heart of Tidal Wave

The lead aircraft of one group was flown by Addison Baker with copilot John Jerstad. During the bomb run, their Liberator was hit hard and caught fire. They were low enough to belly the burning aircraft into a field and give the crew a chance to survive as prisoners.

Instead, they held the burning bomber on course, leading their group all the way to the aiming point so the men behind them would have a leader to follow. When it was done, the airplane was gone. Both men received the Medal of Honor.

In all, five Medals of Honor were awarded for this single mission - three of them posthumously. It remains one of the largest concentrations of the nation’s highest award for any single air action.

The Cost of the Mission

Getting home was its own ordeal. Survivors flew back shot up, streaming fuel, some on two or three engines, scattered in ones and twos with fighters still pursuing. Some diverted to neutral Turkey and were interned; others ditched at sea or crash-landed.

Of the 178 bombers that started, more than 50 were lost. Of roughly 1,700 airmen who flew the mission, more than 500 were killed, captured, missing, or wounded - close to a third of those who took off. By the numbers, Operation Tidal Wave was one of the costliest single missions the Army Air Forces ever flew.

Was the Raid Worth It?

For all the sacrifice, the refineries were not knocked out for good. They were badly hurt, but Ploesti had been operating below its full capacity, and the Germans repaired the damage and had much of it running again within weeks - some sections rebuilt stronger than before. Only a sustained, later campaign of high-altitude raids finally choked off the oil.

The deeper lesson lives in how the crews responded when the plan collapsed. They had a beautiful plan - come in low, catch the enemy asleep, be gone before it woke. Within an hour of takeoff, almost nothing was going as briefed. And they flew the mission anyway, with what they had, from where they were. That is the enduring measure of airmanship: not the plan, but what you do when the plan is gone and you still have to bring the airplane home.

A handful of B-24 Liberators survive today, and only a couple that still fly. Standing under that high wing is the closest most of us will come to imagining a twenty-two-year-old holding one steady at 50 feet with the sky on fire ahead of him - because the men behind him were counting on him not to flinch.

Key Takeaways

Operation Tidal Wave was a low-level B-24 Liberator raid on the Ploesti oil refineries in Romania on August 1, 1943, flown as low as 50 feet.
178 bombers launched from Benghazi, Libya, targeting a complex that supplied roughly one-third of Germany’s liquid fuel.
The surprise plan fell apart in flight - a lost lead navigator, cloud-separated formations, and a wrong turn - leaving the bombers to face hundreds of prepared antiaircraft guns.
More than 50 bombers were lost and over 500 airmen became casualties, making it one of the costliest single Army Air Forces missions of the war.
Five Medals of Honor were awarded for the mission - three posthumously - including to pilots Addison Baker and John Jerstad, who led their group to the target in a burning aircraft.