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.)

“Sniff out the Appenzell Cheese”. Alexander Hunter, 30, of Greenwich, Conn., took this photo in Appenzell, Switzerland, in September 2014. (Photo by Alexander Hunter)

A photographer takes a snapshot of the reflection of balloons as they take off from Balloon fiesta park in Corrales, N.M., near a north diversion channel reservoir Wednesday, October 7, 2015. (Photo by Roberto E. Rosales/Albuquerque Journal via AP Photo)

Starlings gather on power lines at dusk, Friday, October 21, 2022, in Overland Park, Kan. (Photo by Charlie Riedel/AP Photo)

People explore the ice covered pier in Port Stanley, Ontario, Canada, on December 27, 2022. The ice formations were created by a large winter storm which hit the region on over the Christmas weekend. Temperatures were expected to moderate across the eastern and midwest US on December 27, after days of freezing weather from "the blizzard of the century" left at least 49 dead and caused Christmas travel chaos. (Photo by Geoff Robins/AFP Photo)

The northern lights as seen from from Yell in the Shetland Islands, Scotland on January 15, 2023. The aurora borealis is caused by collisions between electrically charged particles released from the sun that enter the Earth’s atmosphere and collide with gases such as oxygen and nitrogen. (Photo by Ryan Nisbet/Capture Media Agency)

A small Leatherback sea turtle heads towards the sea during the sunset at Lhoknga beach in Aceh province on February 25, 2023. (Photo by Chaideer Mahyuddin/AFP Photo)

Military chaplain Yurii looks on in a trench after an Orthodox Easter service for Ukrainian servicemen at their position, as Russia's attack on Ukraine continues, in Kharkiv region, Ukraine on April 15, 2023. (Photo by Sofiia Gatilova/Reuters)