Operation Bolero: The Forgotten Flights of World War II

Aviation News Article – During the height of World War II, as the United States mobilized its military power to support the Allies in Europe, a massive and ambitious operation was launched: Operation Bolero. Designed to transfer thousands of American aircraft and personnel across the Atlantic to the European theater, it would become one of the largest logistical airlifts of its time. But behind the scale and success of the operation lies a lesser-known story — one marked by perilous flights, deadly weather, and aircraft that simply vanished into the Arctic wilderness.

The Purpose of Operation Bolero

By early 1942, the United States had entered the war and urgently needed to position its forces in Britain in preparation for a future invasion of Nazi-occupied Europe. Operation Bolero was the codename for the plan to ferry aircraft — including fighters like the P-38 Lightning and bombers such as the B-17 Flying Fortress — from the U.S. to the U.K. via a northern ferry route.

The chosen path, known as the North Atlantic Ferry Route, stretched from airfields in the northeastern United States to Newfoundland, across to Greenland, then to Iceland, and finally into the British Isles. This route, while strategically necessary to avoid the dangers of German U-boats and reach Europe quickly, posed enormous risks.

P-39 Airacobra

Peril in the Skies

Pilots faced some of the most treacherous flying conditions imaginable. The route crossed thousands of miles of icy ocean, remote wilderness, and frozen tundra. Navigation technology was primitive by modern standards, and pilots had to rely on radio beacons, dead reckoning, and occasional visual cues — often obscured by fog, storms, and the blinding white of Arctic ice.

Weather was the greatest enemy. Sudden storms, extreme cold, and heavy icing could bring down even the sturdiest aircraft. Fuel limitations meant any detour could result in a ditching. As a result, many planes went down or simply disappeared, sometimes with no trace.

P-47 Thunderbolt

The Lost Squadron

One of the most famous incidents of Operation Bolero occurred in July 1942, when six P-38 fighters and two B-17 bombers were forced to make an emergency landing on the Greenland ice sheet after encountering severe weather. Though the crews were rescued after a harrowing ordeal, the aircraft were abandoned and left to the elements.

P-38 Lightning
B-17 Flying Fortress

For decades, the planes were buried beneath the snow and ice, seemingly lost forever. In the 1980s and 1990s, expeditions led by private researchers rediscovered the aircraft — buried under more than 250 feet (over 75 meters) of ice. One of the P-38s, dubbed “Glacier Girl,” was painstakingly recovered and restored to flying condition, becoming a symbol of the forgotten history of Operation Bolero.

Legacy and Remembrance

Operation Bolero ultimately succeeded in its goal, with thousands of aircraft and tens of thousands of troops arriving safely in the U.K. to take part in the buildup to D-Day and the broader European campaign. But the cost was high. Dozens of aircraft were lost along the ferry route, and not all crews were as lucky as those of the Lost Squadron.

Today, the legacy of Operation Bolero serves as a reminder of the immense logistical challenges of global war — and of the courage of the pilots who flew into the unknown, across unforgiving terrain, to fight for a future they believed in.

 

Overall Numbers (1942–1943)

Between mid-1942 and mid-1943, Operation Bolero moved approximately:

  • 10,000 U.S. aircraft to the United Kingdom
  • Along with about 200,000 personnel of the U.S. Army Air Forces (USAAF)

However, not all of these aircraft flew via the northern ferry route (Greenland-Iceland-U.K.). Some were shipped, and others followed different routes. About 900–1,000 aircraft were actually ferried via the North Atlantic Route under Bolero in 1942.


Types of Aircraft Commonly Involved

Fighters

  • P-38 Lightning
    • Twin-engine long-range fighter, well-suited for long ferry flights
    • Used heavily during Bolero — part of the famous Lost Squadron
  • P-39 Airacobra
    • Often ferried as part of early Bolero convoys, but had a shorter range
  • P-47 Thunderbolt
    • Later in the operation, especially 1943 onward
  • Spitfires
    • Some Spitfires were flown by USAAF pilots once stationed in the UK (less involved in ferry flights)
Supermarine 361 Spitfire LF16E US Air Force

Bombers

  • B-17 Flying Fortress
    • Heavy bomber, core of the USAAF’s strategic bombing campaign
    • Many ferried via Bolero in combat-ready groups
  • B-24 Liberator
    • Another long-range heavy bomber used later in the operation

Transport & Support Aircraft

  • C-47 Skytrain (Dakota)
    • Used to transport personnel and supplies
  • C-54 Skymaster
    • Used for longer-range transport later in the war
  • Lockheed Hudsons, A-20 Havocs, and other support aircraft also participated in ferry flights and operational roles
C-47 Dakota
C-54Q Skymaster DC-4

Challenges During Ferrying

  • Aircraft were typically ferried in groups of 6–10, escorted by a lead navigator aircraft.
  • Crews had limited training for Arctic navigation.
  • Aircraft often had to be modified with extra fuel tanks to survive the long legs (especially Greenland to Iceland).
  • Weather was the main threat — icing, storms, and poor visibility caused many crashes.

Losses

Exact numbers of losses are hard to pinpoint, but:

  • At least 90–100 aircraft were lost on the North Atlantic route in 1942 alone.

  • Dozens of aircrews were killed or forced to crash-land, often in Greenland or at sea.

  • Some planes were never found.

Photo’s Archive M. van Leeuwen