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.

Rifled: A gun barrel is rifled when it has grooves (called rifling) cut into the inside of the barrel for longer range and more accurate firing.

Drill: To practice marching, military formations and the steps in firing and handling one's weapon.

U.S. Sanitary Commission: A government agency created on June 18, 1861, whose purpose was to coordinate female volunteers who were supporting the Federal army. These women collected over $25 million in donations from "Sanitary Fairs" and other fundraisers. The volunteers also made uniforms and bandages, worked as cooks, and nursed the sick and wounded. Leadership, however, was largely male.

Federal: Loyal to the government of the United States. Also known as Union, Yankee, or Northern.

Dysentery: (pronounced DISS-ehn-terr-ee) Intestinal disease causing severe diarrhea. Dysentery was a leading cause of deaths by disease.