Guard Mount, Head-Quarters Army of the Potomac by Timothy O'Sullivan https://www.rawpixel.com/image/9013110/guard-mount-head-quarters-army-the-potomac-timothy-osullivanFree Image from public domain licenseFort Knox. M-4 tanks. One of our new battleships of the land, a mighty M-4 tank that will disturb a lot of Axis plans. In… https://www.rawpixel.com/image/12109165/image-hands-art-fireFree Image from public domain licenseJeugdstorm wandelt langs het strand (1942) by J H Hasewinkel https://www.rawpixel.com/image/13734561/jeugdstorm-wandelt-langs-het-strand-1942-hasewinkelFree Image from public domain licenseKoboto Santaro, a Japanese military commander, wearing traditional armour. Coloured photograph by Felice Beato, ca. 1868. https://www.rawpixel.com/image/13952718/photo-image-person-art-swordFree Image from public domain licensePresident Lincoln, United States Headquarters, Army of the Potomac, near Antietam by Alexander Gardner https://www.rawpixel.com/image/14262790/photo-image-hearts-face-handsFree Image from public domain licenseA wounded American soldier is loaded into a medic half-track (1944). Original public domain image from Flickr https://www.rawpixel.com/image/8763814/photo-image-books-posters-mapsFree Image from public domain licensePeking, Pechili province, China. Photograph, 1981, from a negative by John Thomson, 1869. https://www.rawpixel.com/image/13951039/photo-image-people-clothing-manFree Image from public domain licenseFirst Artillery New York, Chancellorsville, Virginia by A J Russell https://www.rawpixel.com/image/14263101/first-artillery-new-york-chancellorsville-virginia-russellFree Image from public domain licenseAirplane, viewed from above looking down by Fédèle Azari https://www.rawpixel.com/image/14263077/airplane-viewed-from-above-looking-down-fedele-azariFree Image from public domain licenseGroup of People on the Deck of a Ship Watching Another Ship Sailing Pass in the Distance by Erich Salomon https://www.rawpixel.com/image/14262818/photo-image-face-person-skyFree Image from public domain licenseLieutenant General Sir George Brown, G.C.B. by Roger Fenton https://www.rawpixel.com/image/9031078/lieutenant-general-sir-george-brown-gcb-roger-fentonFree Image from public domain licenseLieutenant General Sir Harry Jones, K.C.B. by Roger Fenton https://www.rawpixel.com/image/8964727/lieutenant-general-sir-harry-jones-kcb-roger-fentonFree Image from public domain licensePresident Lincoln on Battle-Field of Antietam by Alexander Gardner https://www.rawpixel.com/image/9046734/president-lincoln-battle-field-antietam-alexander-gardnerFree Image from public domain licenseLieutenant General Sir Colin Campbell, G.C.B. by Roger Fenton https://www.rawpixel.com/image/9043037/lieutenant-general-sir-colin-campbell-gcb-roger-fentonFree Image from public domain licenseMilitary Bridge, Across the Chickahominy, Virginia by D. B. Woodbury https://www.rawpixel.com/image/8965976/military-bridge-across-the-chickahominy-virginia-woodburyFree Image from public domain licenseBlack Cañon, Colorado River, Looking Above from Camp 7 by Timothy O'Sullivan https://www.rawpixel.com/image/8965101/black-canon-colorado-river-looking-above-from-camp-timothy-osullivanFree Image from public domain licenseSouvenir Handkerchief Commemorating "Visit of His Royal Highness Prince of Wales to America, 1860" https://www.rawpixel.com/image/9026437/photo-image-frame-person-artFree Image from public domain licenseU.S. Military Telegraph Construction Corps by Timothy O'Sullivan https://www.rawpixel.com/image/9039977/us-military-telegraph-construction-corps-timothy-osullivanFree Image from public domain licenseLieutenant General Sir W.J. Codrington, K.C.B. by Roger Fenton https://www.rawpixel.com/image/9050964/lieutenant-general-sir-wj-codrington-kcb-roger-fentonFree Image from public domain licenseSignal Tower on Elk Mountain, Maryland by Timothy O'Sullivan https://www.rawpixel.com/image/9031403/signal-tower-elk-mountain-maryland-timothy-osullivanFree Image from public domain licensePea Pickers in California / Members of a Roving Army of Fruit Pickers by Dorothea Lange https://www.rawpixel.com/image/14264113/photo-image-face-hands-personFree Image from public domain licenseSince landing on Mars in August 2012, NASA's Curiosity rover has been exploring 3-mile-high Mt. Sharp in Gale Crater. The… https://www.rawpixel.com/image/9975328/photo-image-papers-space-vintageFree Image from public domain licenseGroepsportret van arbeiders bij de Van Diemenstraat in Amsterdam (c. 1890 - c. 1910) by George Hendrik Breitner and Harm… https://www.rawpixel.com/image/13732745/photo-image-paper-face-personFree Image from public domain licenseAnzac Day 1918Collection: Images from the History of Medicine (IHM). Original public domain image from Flickr https://www.rawpixel.com/image/9648154/photo-image-people-medicine-vintageFree Image from public domain licenseTwo actors, one in drag, pose on garden furniture. Photographic postcard, 1918. https://www.rawpixel.com/image/13957875/two-actors-one-drag-pose-garden-furniture-photographic-postcard-1918Free Image from public domain licensePresident Abraham Lincoln, Major General John A. McClernand (right), and E. J. Allen (Allan Pinkerton, left), Chief of the… https://www.rawpixel.com/image/9085596/photo-image-art-vintage-public-domainFree Image from public domain licenseKing George Military Hospital, night nurses (1915). Original public domain image from Flickr https://www.rawpixel.com/image/8763804/photo-image-books-women-postersFree Image from public domain licenseTwo soldiers embracing on a bale of hay, one in drag. Photographic postcard, 191-. https://www.rawpixel.com/image/13968372/photo-image-face-person-clothingFree Image from public domain licenseBrig Niagara, 1913, LOC. Oliver Perry's flagship the "Niagara" and two other ships in Put-in-Bay Harbor, Lake Erie during… https://www.rawpixel.com/image/8718031/photo-image-vintage-public-domain-waterFree Image from public domain licenseU. S. Army Base Hospital Number 69, Savenay, France: Ward C-8 for orthopedic cases. https://www.rawpixel.com/image/9648388/photo-image-face-person-medicineFree Image from public domain licenseLt. General the Honorable Sir J.Y. Scarlett, K.C.B. by Roger Fenton https://www.rawpixel.com/image/14263796/lt-general-the-honorable-sir-jy-scarlett-kcb-roger-fentonFree Image from public domain licenseU.S. Army Evacuation Hospital Nos. 6 & 7, Souilly, France, American Red Cross Canteen. Original public domain image from… https://www.rawpixel.com/image/8763800/photo-image-books-posters-mapsFree Image from public domain license