A view shows Pegasus Bridge at the War Memorial in Benouville in the Normandy region, France, March 27, 2019. Pegasus Bridge was captured by British forces on the night of 5-6 June 1944, an important strategic point as part of the Allied invasion during World War II. France prepares to commemorate the 75th anniversary of the D-Day, the World War II Allied landings and the Battle of Normandy. Picture taken March 27, 2019. REUTERS/Stephane Mahe 

A view shows Pegasus Bridge at the War Memorial in Benouville in the Normandy region, France, March 27, 2019. Pegasus Bridge was captured by British forces on the night of 5-6 June 1944, an important strategic point as part of the Allied invasion during World War II. France prepares to commemorate the 75th anniversary of the D-Day, the World War II Allied landings and the Battle of Normandy.Picture taken March 27, 2019. REUTERS/Stephane Mahe 

U.S. Ambassador Pete Hoekstra unveils an American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach, during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier TPX IMAGES OF THE DAY 

U.S. ambassador Pete Hoekstra unveils an American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach, during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

Netherland's Minister of Defence Ank Bijleveld-Schouten and U.S. ambassador Pete Hoekstra unveil an American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach, during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

Soldiers ride an armoured vehicle as an American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach is prepared for display during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

Soldiers ride an armoured vehicle as an American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach is prepared for display during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

An American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach is prepared for display during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

An American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach is prepared for display during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

U.S. ambassador Pete Hoekstra speaks as an American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach is displayed during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

Netherland's Minister of Defence Ank Bijleveld-Schouten and U.S. ambassador Pete Hoekstra unveil an American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach, during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

Netherland's Minister of Defence Ank Bijleveld-Schouten and U.S. ambassador Pete Hoekstra unveil an American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach is displayed during the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. REUTERS/Eva Plevier 

Minister of Defense Ank Bijleveld-Schouten and Dutch veterans celebrate the 75th anniversary of the D-Day flag in Rotterdam, Netherlands, February 4, 2019. An American flag from Navy ship LCC 60 that led the U.S. invasion fleet at Normandy's Utah Beach on 6 June, 1944, goes on display in the Netherlands. REUTERS/Eva Plevier 

Workers install the "Unconditional Surrender" sculpture by artist Seward Johnson of the U.S. outside the Memorial of Caen museum in Caen, September 25, 2014. The 25-foot statue of a sailor kissing a nurse is to spend a year in front of the Caen Memorial, a museum known for its extensive collection documenting the Normandy invasion in 1944 and World War II. REUTERS/Stephane Mahe (FRANCE - Tags: SOCIETY) BEST QUALITY AVAILABLE 

Workers prepare the "Unconditional Surrender" sculpture by artist Seward Johnson of the U.S. outside the Memorial of Caen museum in Caen, September 25, 2014. The 25-foot statue of a sailor kissing a nurse is to spend a year in front of the Caen Memorial, a museum known for its extensive collection documenting the Normandy invasion in 1944 and World War II. REUTERS/Stephane Mahe (FRANCE - Tags: SOCIETY) 

A worker prepares the "Unconditional Surrender" sculpture by artist Seward Johnson of the U.S. outside the Memorial of Caen museum in Caen, September 25, 2014. The 25-foot statue of a sailor kissing a nurse is to spend a year in front of the Caen Memorial, a museum known for its extensive collection documenting the Normandy invasion in 1944 and World War II. REUTERS/Stephane Mahe (FRANCE - Tags: SOCIETY) 

A worker takes a picture of the "Unconditional Surrender" sculpture by artist Seward Johnson of the U.S. during its installation outside the Memorial of Caen museum in Caen, September 25, 2014. The 25-foot statue of a sailor kissing a nurse is to spend a year in front of the Caen Memorial, a museum known for its extensive collection documenting the Normandy invasion in 1944 and World War II. REUTERS/Stephane Mahe (FRANCE - Tags: SOCIETY TPX IMAGES OF THE DAY) 

Workers prepare the "Unconditional Surrender" sculpture by artist Seward Johnson of the U.S. outside the Memorial of Caen museum in Caen, September 25, 2014. The 25-foot statue of a sailor kissing a nurse is to spend a year in front of the Caen Memorial, a museum known for its extensive collection documenting the Normandy invasion in 1944 and World War II. REUTERS/Stephane Mahe (FRANCE - Tags: SOCIETY) 

Workers install the "Unconditional Surrender" sculpture by artist Seward Johnson of the U.S. outside the Memorial of Caen museum in Caen, September 25, 2014. The 25-foot statue of a sailor kissing a nurse is to spend a year in front of the Caen Memorial, a museum known for its extensive collection documenting the Normandy invasion in 1944 and World War II. REUTERS/Stephane Mahe (FRANCE - Tags: SOCIETY) 

Workers install the "Unconditional Surrender" sculpture by artist Seward Johnson of the U.S. outside the Memorial of Caen museum in Caen, September 25, 2014. The 25-foot statue of a sailor kissing a nurse is to spend a year in front of the Caen Memorial, a museum known for its extensive collection documenting the Normandy invasion in 1944 and World War II. REUTERS/Stephane Mahe (FRANCE - Tags: SOCIETY) 

British D-Day veteran of the Normandy campaign Fred Glover, 88 of Brighton watches a display by 300 multi-national paratroops in Ranville, France June 5, 2014. Glove, of the 9th Parachute Battalion, took part in a glider-borne D-Day attack on a German artillery battery in Merville. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT ROYALS)

British D-Day veteran of the Normandy campaign Fred Glover, 88 of Brighton poses while watching a display by 300 multi-national paratroops in Ranville, France June 5, 2014. Glover, of the 9th Parachute Battalion, took part in a glider-borne D-Day attack on a German artillery battery in Merville. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT ROYALS)

Family members attend a ceremony to commemorate the 70th anniversary of the D-Day landings, at the Museum of American Armor in Old Bethpage, New York, June 6, 2014. REUTERS/Eduardo Munoz (UNITED STATES - Tags: MILITARY TPX IMAGES OF THE DAY ANNIVERSARY) 

French WWII veteran Leon Gautier of the Kiieffer commando (L) and German WWII veteran, paratrooper Johannes Borner (R) embrace as a sign of reconciliation during an international ceremony marking the 70th anniversary of the Allied landings on D-Day on Sword Beach in Ouistreham, in Normandy, June 6, 2014. World leaders and veterans gathered by the beaches of Normandy on Friday to mark the 70th anniversary of World War Two's D-Day landings. REUTERS/Ian Langsdon/Pool (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS TPX IMAGES OF THE DAY)

A huge video screen on Sword Beach shows U.S. President Barack Obama and Russian President Vladimir Putin as they arrive for the International 70th D-Day Commemoration Ceremony in Ouistreham June 6, 2014. World leaders and veterans gathered by the beaches of Normandy on Friday to mark the 70th anniversary of the Allied D-Day landings that helped turn the tables in World War Two. REUTERS/Kevin Lamarque (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT TPX IMAGES OF THE DAY) 

Ukraine president-elect Petro Poroshenko (C) looks on as German Chancellor Angela Merkel (L) talks to Russian President Vladimir Putin after a group photo for the 70th anniversary of the D-Day landings at Benouville Castle, June 6, 2014. World leaders and veterans gathered by the beaches of Normandy on Friday to mark the 70th anniversary of World War Two's D-Day landings. REUTERS/Regis Duvignau (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT TPX IMAGES OF THE DAY)

Fireworks erupt above the rebuilt Pegasus bridge, marking the time just after midnight when British glider-borne forces arrived to capture it on D-Day 70 years ago, in Benouville, France June 6, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT SOCIETY) 

Fireworks erupt above the rebuilt Pegasus bridge, marking the time just after midnight when British glider-borne forces arrived to capture it on D-Day 70 years ago, in Benouville, France June 6, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT SOCIETY) 

Arlette Gondree (R), owner of the Pegasus bridge cafe, makes her annual toast with British D-Day veterans in Benouville, France June 5, 2014. Gondree was four years old when the cafe, owned by her parents, was liberated by British glider-borne troops after midnight on June 6, 1944. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT SOCIETY) 

Russian President Vladimir Putin (R) is greeted by France's President Francois Hollande as he arrives at the Elysee Palace in Paris, June 5, 2014. Putin will be amongst 19 heads of state and government attending D-day anniversary ceremonies along the landing beaches of Normandy in northern France, June 6, 2014. REUTERS/Francois Lenoir (FRANCE - Tags: POLITICS)

British World War II veteran Frederick Glover poses for a photograph as soldiers parachute down during a D-Day commemoration paratroopers launch event in Ranville, northern France, on June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the northern French coastline where Allied forces landed in the largest seaborne invasion in history to help speed up the defeat of Nazi Germany in World War Two. REUTERS/Thomas Bregardis/Pool (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS) 

British D-Day veteran of the Normandy campaign Fred Glover, 88 of Brighton poses while watching a display by 300 multi-national paratroops in Ranville, France June 5, 2014. Glover, of the 9th Parachute Battalion, took part in a glider-borne D-Day attack on a German artillery battery in Merville. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT) 

U.S. Coast Guard Yeoman Second Class Erik Coleman (R) escorts his grandfather, Ralph Kress (L) of Albuquerque, New Mexico, at the National World War II Memorial in Washington June 5, 2014. Kress, an Army veteran, was a survivor of the Normandy D-Day invasion on June 6, 1944, seventy years ago. REUTERS/Gary Cameron (UNITED STATES - Tags: MILITARY ANNIVERSARY SOCIETY CONFLICT) 

A pair of vintage Royal Air Force Spitfire fighters pass over the crowd during a D-Day display by 300 multi-national paratroops in Ranville, France June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT) 

U.S. Coast Guard Yeoman Second Class Erik Coleman (R) escorts his grandfather, Ralph Kress (L) of Albuquerque, New Mexico, at the National World War II Memorial in Washington June 5, 2014. Kress, an Army veteran, was a survivor of the Normandy D-Day invasion on June 6, 1944, seventy years ago. REUTERS/Gary Cameron (UNITED STATES - Tags: ANNIVERSARY MILITARY SOCIETY CONFLICT) 

U.S. Coast Guard Yeoman Second Class Erik Coleman (L) escorts his grandfather, Ralph Kress (R) of Albuquerque, New Mexico, at the National World War II Memorial in Washington June 5, 2014. Kress, an Army veteran, was a survivor of the Normandy D-Day invasion on June 6, 1944, seventy years ago. REUTERS/Gary Cameron (UNITED STATES - Tags: ANNIVERSARY MILITARY SOCIETY CONFLICT) 

An inscription is seen on a wreath written by Britain's Prince Charles after it was placed during a memorial service to commemorate the D-Day actions of the British 6th Airborne Division and the 1st Canadian Parachute Battalion at the village of Bavent near the Normandy coast June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the northern French coastline where Allied forces landed in the largest seaborne invasion in history to help speed up the defeat of Nazi Germany in World War Two. REUTERS/Toby Melville (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS ROYALS) 

Two onlookers watch as Britain's Prince Charles (not seen) attends a memorial service to commemorate the D-Day actions of the British 6th Airborne Division and the 1st Canadian Parachute Battalion at the village of Bavent near the Normandy coast June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the northern French coastline where Allied forces landed in the largest seaborne invasion in history to help speed up the defeat of Nazi Germany in World War Two. REUTERS/Toby Melville (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS ROYALS) 

Britain's Prince Charles places a wreath at the Canadian Airborne War Memorial whilst attending a memorial service to commemorate the D-Day actions of the British 6th Airborne Division and the 1st Canadian Parachute Battalion at the village of Bavent near the Normandy coast June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the northern French coastline where Allied forces landed in the largest seaborne invasion in history to help speed up the defeat of Nazi Germany in World War Two. REUTERS/Toby Melville (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS ROYALS) 

U.S. Coast Guard Yeoman Second Class Erik Coleman (L) escorts his grandfather, Ralph Kress (R) of Albuquerque, New Mexico, at the National World War II Memorial in Washington June 5, 2014. Kress, an Army veteran, was a survivor of the Normandy D-Day invasion on June 6, 1944, seventy years ago. REUTERS/Gary Cameron (UNITED STATES - Tags: ANNIVERSARY MILITARY SOCIETY) 

British World War II veteran Jock Hutton (C), 89, stands following his landing after he and teams of French, US, Canadian and British paratroopers jumped from aeroplanes during a D-Day commemoration in Ranville, northern France, on June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Leon Neal/Pool (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS) 

Britain's Prince Charles (R), Prince of Wales, speaks with British World War II veteran Jock Hutton (L), 89, after Hutton and teams of French, US, Canadian and British paratroopers jumped from aeroplanes during a D-Day commemoration in Ranville, northern France, on June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Leon Neal/Pool (FRANCE - Tags: ANNIVERSARY CONFLICT ROYALS ENTERTAINMENT) 

British World War II veteran Jock Hutton, 89, poses following his landing after he and teams of French, US, Canadian and British paratroopers jumped from aeroplanes during a D-Day commemoration in Ranville, northern France, on June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Leon Neal/Pool (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS) 

British World War II veteran Jock Hutton, 89, poses following his landing after he and teams of French, US, Canadian and British paratroopers jumped from aeroplanes during a D-Day commemoration in Ranville, northern France, on June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Leon Neal/Pool (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS) 

British World War II veteran Jock Hutton (L), 89, performs a successful tandem jump with a British "Red Devils" paratroopers as they and teams of French, U.S., Canadian and British paratroopers jump from aeroplanes during a D-Day commemoration in Ranville, northern France, on June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Leon Neal/Pool (FRANCE - Tags: ANNIVERSARY POLITICS CONFLICT) 

British D-Day veteran of the Normandy campaign Jock Hutton arrives in tandem with a member of the British Army's Red Devils parachute team during a display in Ranville, France June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT) 

Members of the British Army's Red Devils parachute team perform a manoeuvre during a display in Ranville, France June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT TPX IMAGES OF THE DAY) 

British D-Day veteran of the Normandy campaign Jock Hutton, 89, (C) has his webbing removed after landing in tandem with the British Army's Red Devils parachute team during a display in Ranville, France June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT) 

British D-Day veteran of the Normandy campaign Jock Hutton (L) arrives in tandem with a member of the British Army's Red Devils parachute team during a display in Ranville, France June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT TPX IMAGES OF THE DAY) 

Britain's Prince Charles laughs during a lunch with D-Day veterans at a community centre in Ranville, France June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the northern French coastline where Allied forces landed in the largest seaborne invasion in history to help speed up the defeat of Nazi Germany in World War Two. REUTERS/Bruce Adams/Pool (FRANCE - Tags: ANNIVERSARY ENTERTAINMENT MILITARY ROYALS) 

British D-Day veteran of the Normandy campaign Jock Hutton, 89 is greeted by Britain Prince Charles (L) after he landed in tandem with a member of the British Army's Red Devils parachute team during a display in Ranville, France June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the Normandy coastline where Allied forces landed in the largest seaborne invasion in history seventy years ago to help speed up the defeat of Nazi Germany in the Second World War. REUTERS/Chris Helgren (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT ROYALS) 

Britain's Prince Charles attends a memorial service to commemorate the D-Day actions of the British 6th Airborne Division and the 1st Canadian Parachute Battalion at the village of Bavent near the Normandy coast June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the northern French coastline where Allied forces landed in the largest seaborne invasion in history to help speed up the defeat of Nazi Germany in World War Two. REUTERS/Toby Melville (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS ROYALS) 

Britain's Prince Charles (C) lowers his head during a moment of silence whilst attending a memorial service to commemorate the D-Day actions of the British 6th Airborne Division and the 1st Canadian Parachute Battalion at the village of Bavent near the Normandy coast June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the northern French coastline where Allied forces landed in the largest seaborne invasion in history to help speed up the defeat of Nazi Germany in World War Two. REUTERS/Toby Melville (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS ROYALS) 

Britain's Prince Charles salutes whilst attending a memorial service to commemorate the D-Day actions of the British 6th Airborne Division and the 1st Canadian Parachute Battalion at the village of Bavent near the Normandy coast June 5, 2014. Some 3,000 veterans are among those attending ceremonies across the northern French coastline where Allied forces landed in the largest seaborne invasion in history to help speed up the defeat of Nazi Germany in World War Two. REUTERS/Toby Melville (FRANCE - Tags: CONFLICT ANNIVERSARY POLITICS ROYALS)