Tuol Sleng Genocide Museum - Prison Staff

The defense unit was the largest unit in S-21. The guards in this unit were mostly teenagers. Many guards found the unit's strict rules hard to obey. Guards were not allowed to talk to prisoners, to learn their names, or to beat them. They were also forbidden to observe or eavesdrop on interrogations, and they were expected to obey 30 regulations, which barred them from such things as taking naps, sitting down or leaning against a wall while on duty. They had to walk, guard, and examine everything carefully. Guards who made serious mistakes were arrested, interrogated, jailed and put to death. Most of the people employed at S-21 were terrified of making mistakes and feared being tortured and killed.

South: Also called the Confederacy, the Confederate States of America, or (by Northerners) the Rebel states, the South incorporated the states that seceded from the United States of America to form their own nation. Southern states were: Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas, and Virginia.

Parrott gun: A rifled artillery piece with a reinforcing band at the rear, or breech. Parrott guns were used by both the Army and the Navy, and ranged from 10-pounders to 300-pounders. They were named after their designer, Robert Parker Parrott.

Dropsy: (pronounced drop-see) Nineteenth-century term for the condition known today as edema. Fluid builds up in the tissues and causes limbs to swell up horribly.

Siege lines: Lines of works and fortifications that are built by both armies during a siege. The defenders build earthworks to strengthen their position inside a fort or city against assault while the besieging army constructs fortifications to protect siege guns and soldiers from sharpshooters inside the city.

Canteen: Round container used to carry water; made of wood or tin and carried over the shoulder by a strap.