Deng era

See also: Sino-Vietnamese War
Soon after Deng became the Paramount Leader of China, the Vietnamese invaded Cambodia and ended the genocide by defeating the Khmer Rouge in January 1979. The People's Republic of Kampuchea was then established. In order to counter the power of Soviet Union and Vietnam in Southeast Asia, China officially condemned the Vietnamese invasion and continued its material support to Khmer Rouge. In early 1979, China launched an invasion of Vietnam to retaliate against Vietnam's invasion of Cambodia.

Deng was convinced by a conversation with Singapore's prime minister Lee Kuan Yew to limit the scale and duration of the war. Following the one-month war, Singapore attempted to serve as a mediator between Vietnam and China on the Cambodian issue.

Smoothbore: A gun is smoothbore if the inside of the barrel is completely smooth. Smoothbore guns were used before rifled guns were developed. Although smoothbores were not as accurate and had a shorter range than rifled arms, there were still plenty of them in use during the Civil War.

Magazine: A fortified location where powder or supplies were stored.

Breach: A large gap or "hole" in a fortification's walls or embankments caused by artillery or mines, exposing the inside of the fortification to assault.

Sentry: (pronounced SEHN-tree) A soldier standing guard.

Spike: To make an artillery piece unusable so that it could not be used by the enemy if captured.