Three Chinese soldiers at the time of a civil war in China. (Photo by General Photographic Agency/Getty Images). 1922

Iraqi forces gather during an operation to attack Islamic State militants in Mosul, Iraq, October 21, 2016. (Photo by Reuters/Stringer)

Comandos de Salvamento rescuers Maria Martinez (L) and Ana Chichilla attend to a wounded homeless man in San Salvador, El Salvador July 16, 2016. The man was attacked with a machete by suspected gang members. In 2015, El Salvador registered a record 103 homicides per 100,000 habitants, making it one of the most dangerous countries in the world outside a war zone. But for many young people who have few chances to distance themselves from rivalries between so-called maras in their schools and neighbourhoods, a civil-society organisation called the Comandos de Salvamento, or Rescue Corps, has been a refuge. (Photo by Jose Cabezas/Reuters)

A man dressed as the “Star Wars” character Darth Vader sits on a bench in central Lviv, Ukraine, November 24, 2016. (Photo by Gleb Garanich/Reuters)

Shiite Muslim pilgrims march with flags en route to Karbala from Nasiriyah in Iraq's southern Dhi Qar province on September 5, 2022, ahead of the holiday of Arbaeen. (Photo by Asaad Niazi/AFP Photo)

Revelers take part in the Theatre Bizarre festival, a Halloween celebration that is returning in person for the first time since the COVID-19 pandemic, in Detroit, Michigan, U.S., October 14, 2022. (Photo by Dieu-Nalio Chery/Reuters)

US M142 High Mobility Artillery Rocket System (HIMARS) is launched as journalists film during a military exercise in Capas, Tarlac province, Philippines, 13 October 2022. The Philippines hosted simultaneous combat drills with the United States, South Korea, and Japan to improve interoperability in times of conflict. (Photo by Francis R. Malasig/EPA/EFE)

Aymara indigenous women “Martha La Altena” (El Alto's Martha) (R) and “Susana La Bonita” (Pretty Susana) take part in a freestyle wrestling flight in El Alto, on June 29, 2018. “Cholita Fighters” aim to include their show in a tourist route. (Photo by Aizar Raldes/AFP Photo)