them. Open hostilities took the form of wars by proxy, with the Soviet Union and the US supporting loyal client régimes or rebel movements in Third World countries. Military doctrine The Soviet meaning of military doctrine was much different from U.S. military usage of the term. Soviet Minister of Defence Marshal Andrei Grechko defined it in 1975 as 'a system of views on the nature of war and methods of waging it, and on the preparation of the country and army for war, officially adopted in a given state and its armed forces.' Soviet theorists emphasised both the political and 'military-technical' sides of military doctrine, while from the Soviet point of view, Westerners ignored the political side. According to Harriet F Scott and William Scott, the political parts of Soviet military doctrine best explained the international moves that the Soviet Union undertook during the Cold War. The limited contingent in Afghanistan In 1979, however, the Soviet Army intervened in a civil war raging in Afghanistan. The Soviet Army came to back a Soviet-friendly communist government threatened by multinational, mainly Afghan, insurgent groups called the mujahideen. The insurgents received military training in neighboring Pakistan, China, and billions of dollars from the United States, Saudi Arabia, and other countries. Technically superior, the Soviets did not have enough troops to establish control over the countryside and to secure the border. This resulted from hesitancy in the Politburo, which allowed only a "limited contingent", averaging between 80,000 and 100,000 troops. Consequently, local insurgents could effectively employ hit-and-run tactics, using easy escape-routes and good supply-channels. This made the Soviet situation hopeless from the military point of view (short of using "scorched earth" tactics, which the Soviets did not practice except in World War II in their own territory). The understanding of this made the war highly unpopular within the Army. With the coming of glasnost, Soviet media started to report heavy losses, which made the war very unpopular in the USSR in general, even though actual losses remained modest, averaging 1670 per year. The war also became a sensitive issue internationally, which finally led General Secretary Mikhail Gorbachev to withdraw the Soviet forces from Afghanistan. The "Afghan Syndrome" suffered by the Army parallels the American Vietnam Syndrome trauma over their own unsuccessful war in Vietnam. Tactically, both sides concentrated on attacking supply lines, but Afghan mujahideen were well dug-in with tunnels and defensive positions, holding