Hafizullah Amin
To bolster the Parcham faction, the Soviet Union decided to intervene on December 27, 1979, when the Red Army invaded its southern neighbor. Over 100,000 Soviet troops took part in the invasion, which was backed by another 100,000 Afghan military men and supporters of the Parcham faction. In the meantime, Hafizullah Amin was killed and replaced by Babrak Karmal.