Gas-masked men of the British Machine Gun Corps with a Vickers machine gun during the first battle of the Somme, 1916. (Photo by General Photographic Agency/Getty Images)

This file photo provided on Sunday February 15, 2015 by the Syrian anti-government activist group Aleppo Media Center (AMC), which has been authenticated based on its contents and other AP reporting, shows Syrian rebels firing locally made shells against the Syrian government forces, in Aleppo, Syria. (Photo by AP Photo/Aleppo Media Center)

A man walks in the street at the start of the new curfew to counter the COVID-19 in the center of Lyon, central France, Saturday, January 16, 2021. All of France will be under a stricter curfew starting Saturday at 6 p.m. for at least 15 days to fight the spread of the coronavirus. (Photo by Laurent Cipriani/AP Photo)

Participants attend the annual May bank holiday “Jack In The Green” parade and festival in Hastings, Britain, May 6, 2019. (Photo by Toby Melville/Reuters)

A man walks by as tourists take selfies on the French Riviera city of Nice on June 24, 2019, as temperatures soar to 33 degrees Celsius. Forecasters say Europeans will feel sizzling heat this week with temperatures soaring as high as 40 degrees Celsius (104 degrees Fahrenheit) in an “unprecedented” June heatwave hitting much of Western Europe. (Photo by Valery Hache/AFP Photo)

People attend the Immortal Regiment march on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in the village of Bobrovka in the Omsk Region, Russia on May 9, 2022. (Photo by Alexey Malgavko/Reuters)

People watch fireworks commemorating the 76th anniversary of the victory in the Great Patriotic War in St. Petersburg, Russia, May 9, 2021. (Photo by Chine Nouvelle/SIPA Press/Rex Features/Shutterstock)

School children wear face masks as they take part in an awareness rally against the use of tobacco on “World No Tobacco Day” in Kolkata on May 31, 2022. (Photo by Dibyangshu Sarkar/AFP Photo)