Dr. P.A. Smithe was sent by the American Red Cross as a doctor and surgeon to work at a hospital in Vienna. He sailed to Europe in December 1915 and returned home in August 1916, according to his daughter, who donated his images to the National World War I Museum. Photo: Turkish army, including cavalry, infantry and artillery. (Photo by Dr. P.A. Smithe/National World War I Museum, Kansas City, Mo.)

Exhibition's guides pose on a tank during the Army-2022 International Military-Technical Forum at the Russian Armed Forces' Patriot Park in Kubinka, outside Moscow, on August 16, 2022. (Photo by Natalia Kolesnikova/AFP Photo)

Members of Nepal Army wearing personal protective equipment (PPE) carry the body of a person, who died from the coronavirus disease (COVID-19), in the rain at the crematorium, in Kathmandu, Nepal on May 11, 2021. (Photo by Navesh Chitrakar/Reuters)

Palestinians living in the rubble of destroyed houses or in makeshift tents in the city of Khan Yunis, which suffered great destruction during the 15-month-long attacks of the Israeli army, continue their daily life despite all the negativities on February 16, 2025 in Khan Yunis, Gaza. (Photo by Abed Rahim Khatib/Anadolu via Getty Images)

Rosie Weaver leans against the headstone of her husband, U.S. Army Spc. Michael Weaver, after a Memorial Day ceremony, Sunday, May 25, 2025, at Great Lakes National Cemetery in Holly Township, Mich. (Photo by Ayrton Breckenridge/The Flint Journal via AP Photo)

Chingele, a herder, wears a traditional Mongol costume to greet a neighbor for the New Year. Chingele was among a group of herders who went to Beijing to protest eviction from grazing lands to make room for an army training camp. (Photo by Gilles Sabrie/The Washington Post)

Robert The Bruce's army from The Clanranald Trust during a rehearsal for the Battle of Bannockburn re-enactment performance which will be staged at the Bannockburn Live Event in Bannockburn, the 700th anniversary of the battle, on June 27, 2014. (Photo by Andrew Milligan/PA Wire)

French army deminers secure a helicopter in a hangar at the Gao airport, on February 9, 2013. Two Malian soldiers and four civilians have already been killed by landmines, and French troops are still fighting off what Paris called “residual jihadists” in reclaimed territory. (Photo by Pascal Guyot/AFP Photo via The Atlantic)