The Soviet Union invades Afghanistan on December 24, 1979, under the pretext of upholding the Soviet-Afghan Friendship Treaty of 1978.
As midnight approached, the Soviets organized a massive military airlift into Kabul, involving an estimated 280 transport aircraft and three divisions of almost 8,500 men each. Within a few days, the Soviets had secured Kabul, deploying a special assault unit against Tajberg Palace. Elements of the Afghan army loyal to Hafizullah Amin put up a fierce, but brief resistance. On December 27, Babrak Karmal, exiled leader of the Parcham (PDPA), was installed as Afghanistan’s new head of government.
The Mujahidin employed guerrilla tactics against the Soviets. They would attack or raid quickly, then disappear into the mountains, causing great destruction without pitched battles. The fighters used whatever weapons they could grab from the Soviets or were given by the United States.
New Soviet leader Mikhail Gorbachev decided it was time to get out. Demoralized and with no victory in sight, Soviet forces started withdrawing in 1988. The last Soviet soldier crossed back across the border on February 15, 1989.