Marmon-Herrington was a builder of trucks, buses, and trolleybuses, best known for its all-wheel-drive conversions to other truck maker's units, especially to Ford ones. The company was founded in 1931 by Walter C. Marmon and Arthur W. Herrington and focused on building all wheel drive trucks. Marmon-Herrington got off to a successful start by procuring contracts for military aircraft refueling trucks, 4x4 chassis for towing light weaponry, commercial aircraft refueling trucks, and an order from the Iraqi Pipeline Company for what were the largest trucks ever built at the time. In addition to large commercial and military vehicles, company leaders recognized a growing market for moderately priced all-wheel drive vehicles.