A line of soldiers firing handguns during a training session, circa 1920. (Photo by Keystone). P.S. All pictures are presented in high resolution.

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

A Saudi soldier fires a mortar towards Houthi movement position, at the Saudi border with Yemen April 21, 2015. (Photo by Reuters/Stringer)

A pigeon, known as Siyah Kinifirli, with an approximate market value of 1000 Turkish Lira ($263), bred by 23-year-old Ismail Ozbek, is pictured in Sanliurfa, Turkey, December 23, 2016. As night-time approaches in Sanliurfa, southeastern Turkey, most of the alleyways of the city's old bazaar are emptying out of buyers and vendors, except for one. (Photo by Umit Bektas/Reuters)

A journalist (R) is attacked by residents who are trying to prevent migrants from disembarking on the Greek island of Lesbos, on March 1, 2020. The United Nation called on March 1 for calm and urged states to refrain from “excessive” force, as thousands of migrants have flooded to Turkey's border with Greece in a bid to enter the EU. A massive influx of migrants swelled along the border over the weekend after Turkey's President Recep Tayyip Erdogan threatened to open its frontier to Europe as tensions mount over its deepening conflict in Syria. (Photo by AFP Photo/Stringer)

A close-up shot of dews of a soldier fly on August 2014, in Banten, Indonesia. Wildlife photographer takes incredible close-up images of tiny bugs. Yudy Sauw has captured close-up images of creepy crawlies – revealing their disturbing faces. The insects have an assortment bulging eyes and sharp pincers and look grotesque in the face-to-face shots. The miniature-models include a soldier fly, a red ant and a longhorn beetle. The 33-year-old photographed the bugs at his home studio in Banten, Indonesia, placing them 2-10 centimeters away from the camera. (Photo by Yudy Sauw/Barcroft Media)