Tuol Sleng Genocide Museum

The Tuol Sleng Genocide Museum or simply Tuol Sleng; lit. "Hill of the Poisonous Trees" or "Strychnine Hill") is a museum chronicling the Cambodian genocide. Located in Phnom Penh, the site is a former secondary school which was used as Security Prison 21 (S-21; Khmer: ម�"�'�'ីរស-២១) by the Khmer Rouge regime from 1975 until its fall in 1979. From 1976 to 1979, an estimated 20,000 people were imprisoned at Tuol Sleng and it was one of between 150 and 196 torture and execution centers established by the Khmer Rouge. On 26 July 2010, the Extraordinary Chambers in the Courts of Cambodia convicted the prison's chief, Kang Kek Iew, for crimes against humanity and grave breaches of the 1949 Geneva Conventions. He died on 2 September 2020 while serving a life sentence.

Garrison: A group of soldiers stationed at a military post.

Navy: A branch of the military using ships to conduct warfare. During the Civil War, "blue water" ships cruised the oceans and "brown water" boats floated up and down the rivers.

Monitor: Originally, the U.S.S. Monitor, the first ironclad warship in the United States Navy, commanded by Admiral John L. Worden. The vessel had a large, round gun turret on top of a flat raft-like bottom, which caused some spectators to describe it as a "cheesebox on a raft." The first engagement between ironclads occurred on March 8-9, 1862, at the Battle of Hampton Roads, VA, when the U.S.S. Monitor fought the C.S.S. Virginia (formerly the U.S.S. Merrimack). Eventually a "monitor" became the official term for an entire class of warships modeled after the original U.S.S. Monitor.

Yankee: A Northerner; someone loyal to the Federal government of the United States. Also, Union, Federal, or Northern.

Mortar: An unrifled artillery gun which was designed to launch shells over walls and enemy fortifications. The most famous Civil War mortar is the "Dictator" -- a mortar which was mounted on a railroad car and used during the siege of Petersburg. With its 13 inch bore it was capable of launching two hundred pound shells.