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The header graphic for the page, showcasing the title 'The Debacle of Exercise Tiger' atop a photo of soldiers storming the beaches of Normandy.

Library of Congress

By Charles Apple

In June 1944, the D-Day invasion of France led to the liberation of Nazi- occupied Europe in World War II.

Before the successful landing on the beaches of Normandy, however, Allied forces practiced on the shores of England.

One such rehearsal – Exercise Tiger, 80 years ago this weekend – didn’t end so well.

An Evacuation

As if the people of England didn’t have enough to worry about, with Hitler staring at them from across the channel: The Allies needed a place to rehearse a full-scale amphibious landing of the type they’d need to perform that summer.

A map of the lower half of England, showcasing several locations like Liverpool, London, Southampton, and Plymouth, which is around where the testing location was chosen.
Slapton Sands on the South Devon Coast of England was selected because of the similarity to the beaches of Normandy.

First, though, the civilian population had to be removed. Citizens were told they had five weeks to clear out. Eight villages, 180 farms and shops and 750 families — a total of more than 3,000 people — reluctantly loaded up their belongings and farm animals and trudged away from their homes.

A photo from the National Archives showcasing several British residents lined up with their belongings to evacuate from Slapton Sands.
National Archives

The Exercise

The goal of Exercise Tiger was to rehearse for the landings at Normandy. Ships and landing craft were loaded with troops and vehicles in Plymouth and Brixham and set out into the heavily guarded English Channel.

The first troops landed at Slapton Sands on the morning of April 27. The area inland was bombarded throughout the day, just as it would be at Normandy.

A second convoy of eight U.S. LST (landing ship, tank) was to land in the wee hours of the 28th ...

A photo of several U.S. soldiers disembarking a WW2 era landing boat.
U.S. Navy

Practice Gets Real

The eight flat-bottomed ships were loaded with engineers, supply specialists, tanks, jeeps and other equipment to be uploaded after the beach had been secured.

They were to be escorted by two British warships, but one was damaged in a collision. A replacement ship was en route, but the U.S. convoy was unaware: No one had realized the U.S. and British ships were using different radio frequencies.

Sure enough, the worst happened: A group of nine swift-moving German E-boats — similar to U.S. PT boats — on patrol out of Cherbourg, France, noticed unusual radio traffic and decided to investigate. Spotting what they thought were eight British destroyers, they ripped into the convoy just after 2 a.m.

A photograph of a German E-boat, taken by the allies as one of the craft surrendered to them.
Imperial War Museum

A typical German E-boat

A graphic of the LST-58 done by Charles Apple.
LST-58

Built: October 1943, Pittsburg

A graphic of the LST-289 done by Charles Apple.
LST-289

Built: November 1943, Ambridge, Mass.

LST-289 was damaged when a torpedo blew off the ship’s stern, destroying the crew’s quarters and the rudder. The troop commander suggested evacuating the ship using amphibious trucks. Flooding was brought under control and the ship landed at Dartmouth later that morning.

Dead: 123

A graphic of the LST-496 done by Charles Apple.
LST-496

Built: September 1943, Evansville, Ind.

A graphic of the LST-499 done by Charles Apple.
LST-499

Built: September 1943, Evansville, Ind.

A graphic of the LST-507 done by Charles Apple.
LST-507

Built: November 1943, Jeffersonville, Ind.

LST-507 was crippled by a torpedo strike and strafing. After it was evacuated, the ship was scuttled the next day by a British destroyer

A graphic of the LST-511 done by Charles Apple.
LST-511

Built: November 1943, Seneca, Ill.

LST-515 was struck by two torpedoes that failed to detonate. Was reportedly the only ship in the convoy that went back to pick up survivors.

Dead: 202 service members on the LST-507

A graphic of the LST-515 done by Charles Apple.
LST-515

Built: September 1943, Seneca, Ill.

A graphic of the LST-531 done by Charles Apple.
LST-531

Built: November 1943, Evansville, Ind.

LST-531 sank within six minutes of being torpedoed.

Dead: 424

The executive officer aboard LST-507, Lt. James Murdock, later said he thought the attackers were Allied escort boats until a torpedo slammed into his ship.

Lt. Eugene Eckstam, a medical officer also aboard LST-507, later wrote: “Ship’s company wore life jackets, but the medics and Army personnel had been issued inflatable belts ... The soldiers that jumped or dove in with full packs did not do well. Most were found with their heads in the water and their feet in the air, top heavy from not putting the belts around their chests before inflating them. Instructions in their correct use had never been given.”

A photograph of LST-289 after the attack. The ship is almost wholly destroyed, with the bridge collapsed in on itself and the hull opened up on the stern.
Exercise Tiger Trust

The stern of LST-289 after the attack.

Among the missing from Exercise Tiger were 10 officers who had security clearance “Bigot,” meaning they had the higher-than-top-secret access to D-Day invasion planning.

Gen. Dwight D. Eisenhower, commander of Allied forces in Europe, was forced to continue preparing for the invasion without knowing whether his plans had been compromised by a captured officer.

The Aftermath

After the war, residents were allowed to move back to the Slapton Sands area. On the 10th anniversary of D-Day, the U.S. Army erected a monument honoring those “who generously left their homes and their lands to provide a battle practice area for the successful assault in Normandy.”

A local man raised money to bring up a U.S. Sherman tank that had lay on the ocean floor a mile offshore. The tank memorial was restored and dedicated in June 1984.

A photograaph of the aformentioned tank from before. The tank has a large flower up on its front chasis, and the water damage is clearly visible by the hull's color and texture.
WikiMedia Commons

Ironically, the tank was not lost in Exercise Tiger — it had been lost overboard a year earlier, in 1943.

Urban legends in the region and elsewhere allege that Exercise Tiger was covered up by embarrassed military officials. The exercise was top secret when it happened and until after the Normandy Invasion. Exercise Tiger is not often written about but hardly covered up.

Oh — and the actual D-Day landings in France on June 6, 1944, were successful, of course. The Allies eventually won the war. But you probably knew that part already.

Sources: “Exercise Tiger: The Dramatic True Story of a Hidden Tragedy of World War II” by Nigel Lewis, “Spearheading D-Day: American Special Units in Normandy” by Jonathan Gawne. “D-Day June 6, 1944: The Climatic Battle of World War II” by Stephen E. Ambrose, “D-Day: Minute by Minute” by Meredith Special Interest Media Exercise Tiger Trust, Exercise Tiger Remembered, Exercise Tiger National Commemorative Foundation, U.S. Navy Naval Historical Center, NavSource.org, U.S. Quartermaster Museum, the London Telegraph

This edition of Further Review was adapted for the web by Zak Curley.