Mil Mi-8 combat helicopter flies over Moscow, Russia on May 7, 2019 during the dress rehearsal of a Victory Day air show marking the 74th anniversary of the victory over Nazi Germany in the 1941-1945 Great Patriotic War, the Eastern Front of World War II. (Photo by Sergei Savostyanov/TASS)

A Thorneycroft motor van as used during World War I. (Photo by Topical Press Agency/Getty Images). August 1914

Members of the organization Witness Against Torture wear orange prison jump suits with handcuffs and a hood over their heads during a demonstration urging the government to close down the detention facility at Guantanamo Bay, in Lafayette Park outside the White House January 11, 2012 in Washington, DC. Protesters carry on a 92-hour vigil in a protest of the 10th anniversary of the arrival of the first group of detainees to arrive at the US military facility (Photo by Astrid Riecken/Getty Images)

Mara Salvatrucha (MS) gang members show off their weapons in the Las Victorias district of San Salvador. In March 2012, the two largest gangs in El Salvador - the Mara Salvatrucha (MS) and the Barrio 18 (M18) - agreed on a truce following secret negotiations between gang leaders in prison which were mediated by a bishop and a former rebel leader. It is unclear whether the decision was the idea of the gangs themselves or whether they were encouraged by the government. (Photo by Adam Hinton)

Adolf Hitler (1889–1945), leader of the National Socialist German Workers' Party (NSDAP), strikes a pose for photographer Heinrich Hoffmann whilst listening to a recording of his own speeches, 1925. After seeing the photographs, Hitler ordered Hoffmann to destroy the negatives, but he disobeyed. (Photo by Heinrich Hoffmann). P.S. All pictures are presented in high resolution.

Australian World War Two veterans place crosses and flags at graves before attending the French-British ceremony at the British War cemetery in Bayeux, June 6, 2014. REUTERS/Leon Neal/Pool

South Korean performers participate in a re-enactment of the battle of the Korean war during the ceremony to mark the 70th anniversary of the Korean War in Cheorwon, near the border with North Korea on June 25, 2020 in Cheorwon, South Korea. Over 66,000 South Koreans have been separated from their families during the Korean War which started on June 25, 1950, and effectively split the Korean Peninsula into two over the 3-year conflict. (Photo by Chung Sung-Jun/Getty Images)

“The Spanish Civil War (The Crusade among Nationalists, Fourth Carlist War among Carlists, The Rebellion or Uprising among Republicans) was a major conflict fought in Spain from 17 July 1936 to 1 April 1939. An estimated total of 500,000 people lost their lives as a consequence of the War”. – Wikipedia. Photo: Actors take part in a re-enactment of the “Battle of Areces” that took place during the Spanish Civil War, in Grullos, north of Spain, September 14, 2013. The re-enactment of the historic 1937 battle was organised by the Frente del Nalon Association. (Photo by Eloy Alonso/Reuters)