Beginning in the late 1970s, after South Korea received new technologies and equipment from the United States,[10][11] the DPRK began a major reorganization and modernization of its ground forces. The DPRK began to produce a modified version of the 115 mm gunned T-62 tank, which was the Soviet army's main battle tank in the 1960s. Based on general trends and photography of armed forces parades, it is clear that the DPRK has made considerable modifications to the basic Soviet and Chinese designs in its own production.
In the 1980s, in order to make the army more mobile and mechanized, there was a steady influx of new tanks, self propelled artillery, armored personnel carriers (APCs), and trucks. The ground forces seldom retire old models of weapons and tend to maintain a large equipment stock, keeping old models along with upgraded ones in the active force or in reserve. The army remains largely an infantry force, although a decade-long modernization program has significantly improved the mobility and firepower of its active forces.
Between 1980 and 1992, the DPRK reorganized, reequipped, and forward deployed the majority of its ground forces. The army places great emphasis on special operations and has the 2nd largest special operations forces in the world — tailored to meet the distinct requirements of mountainous Korean terrain. Between 1984 and 1992, the army added about 1,000 tanks, over 2,500 APC/infantry fighting vehicles (IFV), and about 6,000 artillery tubes or rocket launchers. In 1992 North Korea had about twice the advantage in numbers of tanks and artillery, and a 1.5-to-1 advantage in personnel over its potential adversaries[citation needed], the United States-Republic of Korea defenses to the south (though it must be pointed out that most of this equipment is obsolete compared to that of the South Korean military)[citation needed]. Over 60 percent of the army was located within 100 kilometers of the DMZ in mid-1993.