The High Mobility Multipurpose Wheeled Vehicle HMMWV colloquially known as Humvee is a light vehicle four-wheel drive military vehicle and utility truck. The vehicle was a replacement to the roles previously played by the Jeep and was a product of the AM General. The Vietnam War-era M151 Jeep is, and the M561 are some of the light trucks that were supplanted by the Hummer Humvee. It was primarily used in the United States as a military utility vehicle. Currently, it is used by other countries and has found its way to other civilian adaptations.