Two Horse Team with Driver, Pulling Carriage (recto); Sketches of Women Bending Over (verso) by David Teniers, the younger https://www.rawpixel.com/image/8999751/image-paper-horse-cowFree Image from public domain licenseGhastly Glimpse of Wounded Belgians in Hospital, Antwerp, Belgium. by Underwood and Underwood https://www.rawpixel.com/image/14295383/photo-image-face-person-hospitalFree Image from public domain licenseGerman Invasion of the Netherlands and Belgium on 10 May 1940 (1940) by Meissener Porzellan Manufaktur https://www.rawpixel.com/image/13754882/photo-image-art-pattern-circleFree Image from public domain license