Tuol Sleng Genocide Museum - Torture and extermination

For the first year of S-21's existence, corpses were buried near the prison. However, by the end of 1976, cadres ran out of burial spaces, the prisoner and family members were taken to the Boeung Choeung Ek ("Crow's Feet Pond") extermination centre, fifteen kilometers from Phnom Penh. There, they were killed by a group of teenagers led by a Comrade Teng, being battered to death with iron bars, pickaxes, machetes and many other makeshift weapons owing to the scarcity and cost of ammunition. After the prisoners were executed, the soldiers who had accompanied them from S-21 buried them in graves that held as few as 6 and as many as 100 bodies.

Campaign: A series of military operations that form a distinct phase of the War (such as the Shenandoah Valley Campaign).

Offensive: Actively attacking someone.

Militia: Troops, like the National Guard, who are only called out to defend the land in an emergency.

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.