Military Hummer / Humvee Military T Shirt. The High Mobility Multipurpose Wheeled Vehicle (HMMWV or Humvee or hummer) is a military 4WD motor vehicle created by AM General. It has largely supplanted the roles formerly served by smaller Jeeps such as the M151 1/4 ton MUTT, the M561 "Gama Goat", their M718A1 and M792 ambulance versions, the CUCV, and other light trucks. Primarily used by the United States military, it is also used by a number of other countries and organizations and in civilian adaptations. This design is printed on an Ash colored 50/50 blend T-shirt.