The M1 Abrams is a military tank produced in the United States. The M1 is named after General Creighton Abrams, former Army Chief of Staff and commander of the 37th Armored Regiment.
It is a main battle tank, the well armed, heavily armored, and highly mobile offensive mainstay of modern armored ground warfare. Notable features of the M1 Abrams include the use of a powerful gas turbine engine, the adoption of sophisticated composite armor, and separate ammunition storage in a blow-out compartment for crew safety. It is one of the heaviest tanks in service.
The M109 is an American-made self-propelled 155 mm howitzer, first introduced in the early 1960s. It has been continually upgraded and improved to today's current version, the M109A6 "Paladin" which is only used by the US Army. The US still maintains a number of M109A5's in its forces. The M109 family is the most prevalent western indirect-fire support weapon of maneuver brigades of armored and mechanized infantry divisions.
By kjfitz @ 2008-01-30 13:40:13