Washington, D.C. President Roosevelt reviewing the Memorial Day parade. Sourced from the Library of Congress. https://www.rawpixel.com/image/12288760/photo-image-plant-people-treeFree Image from public domain licenseJackson, Michigan. Tractor which runs a threshing machine. Sourced from the Library of Congress. https://www.rawpixel.com/image/12290476/photo-image-plant-person-grassFree Image from public domain licenseHolabird ordnance depot, Baltimore, Maryland. These rubber half-track treads cannot be recapped. Extreme care must therefore… https://www.rawpixel.com/image/12294265/photo-image-person-public-domain-architectureFree Image from public domain licenseTruck belonging to oil well driller, Salem, Illinois. Sourced from the Library of Congress. https://www.rawpixel.com/image/12252613/photo-image-person-public-domain-architectureFree Image from public domain licenseA U.S. Soldier assigned to the 11th Armored Cavalry Regiment fires a simulated rocket propelled grenade against assaulting… https://www.rawpixel.com/image/8727752/photo-image-fires-public-domain-personFree Image from public domain licenseU.S. Marines and members of the Japan Ground Self-Defense Force watch as the MV-22 Osprey takes off Aug. 18, 2017, in… https://www.rawpixel.com/image/8727835/photo-image-airplane-public-domain-peopleFree Image from public domain licenseU.S. Marines with 2nd Air Delivery Platoon, 2nd Marine Logistics Group, in support of Weapons and Tactics Instructor Course… https://www.rawpixel.com/image/8728387/photo-image-public-domain-person-manFree Image from public domain licenseMechanical potato digger. Monmouth County, New Jersey. Sourced from the Library of Congress. https://www.rawpixel.com/image/12273724/photo-image-plant-person-grassFree Image from public domain licenseThe door gunner of a UH-60 Black Hawk, from the 3rd Battalion, 501st Aviation Regiment, Combat Aviation Brigade, 1st Armored… https://www.rawpixel.com/image/8727974/photo-image-public-domain-person-manFree Image from public domain licenseU.S. Marines assigned to the 26th Marine Expeditionary Unit (MEU), participate in a small arms gun shoot qualification on… https://www.rawpixel.com/image/8728238/photo-image-public-domain-ocean-peopleFree Image from public domain licenseRetro shield cut out sticker safety and protection https://www.rawpixel.com/image/2700768/premium-illustration-image-advertisement-armor-assuranceView licenseA Royal Thai Soldier with 52nd Engineer Battalion, 1st Regiment Kings Guard, cuts cement block for a. https://www.rawpixel.com/image/8727956/photo-image-public-domain-person-manFree Image from public domain licenseHolabird ordnance depot, Baltimore, Maryland. Periodic complete vehicle inspection is required of all United States Army… https://www.rawpixel.com/image/12294031/photo-image-person-public-domainFree Image from public domain license[Untitled photo, possibly related to: Washington, D.C. Scrap salvage campaign, Victory Program. Unloading metal scrap from a… https://www.rawpixel.com/image/12287979/photo-image-person-public-domain-manFree Image from public domain licenseSalinas Valley, California. Harvesting guayule. Sourced from the Library of Congress. https://www.rawpixel.com/image/12296387/photo-image-plant-person-skyFree Image from public domain license[Untitled photo, possibly related to: New road under construction in Menard County, Texas] by Russell Lee https://www.rawpixel.com/image/12147361/image-plant-person-artFree Image from public domain licenseFort Belvoir, Virginia. Sergeant George Camblair learning to drive a jeep. Sourced from the Library of Congress. https://www.rawpixel.com/image/12287893/photo-image-face-person-public-domainFree Image from public domain license[Untitled photo, possibly related to: Grading at the Greenhills Project, Cincinnati, Ohio]. Sourced from the Library of… https://www.rawpixel.com/image/12253712/photo-image-person-sky-public-domainFree Image from public domain license[Untitled photo, possibly related to: Detroit, Michigan (vicinity). Chrysler Corporation Dodge truck plant. Dodge Army… https://www.rawpixel.com/image/12288803/photo-image-plant-person-airplaneFree Image from public domain licenseCartoon blue shield vintage sticker https://www.rawpixel.com/image/2700780/premium-illustration-image-advertisement-armor-assuranceView license