Ethnic victims

Scholars and historians have varying opinions on whether the persecution and killings under the hands of the Khmer Rouge should be considered genocide. This is because the earlier scholarship which came about right after the fall of the Khmer Rouge regime in 1979 had claimed that the victims could have been killed due to the circumstances they were in. For instance, Michael Vickery opined that the killings were "largely the result of the spontaneous excesses of a vengeful, undisciplined peasant army."

This view was also supported by Alexander Hinton, who related an account by a former Khmer Rouge cadre who claimed that the killings were acts of retribution for the injustices of the Lon Nol soldiers when they killed people who were known to be former Viet Minh agents before the rise of Pol Pot and Khmer Rouge to power. Vickery�"erroneously, as maintained by the more recent scholarship of Ben Kiernan�"argued that the number of Cham victims during the Khmer Rouge regime to be around 20,000 which would rule out the crime of genocide against Pol Pot and the Khmer Rouge. The killings were a centralized and bureaucratic effort by the Khmer Rouge regime, as recently documented by the Documentation Center of Cambodia (DC-Cam) through the discovery of Khmer Rouge internal security documents which instructed the killings across Cambodia. However there were also instances of "indiscipline and spontaneity in the mass killings." On top of that, Etcherson has also maintained that with the systematic mass killings based on political affiliation, ethnicity, religion, and citizenship resulting in the loss of a third of the Cambodian population, the Khmer Rouge is effectively guilty of committing genocide.

Canister: A projectile, shot from a cannon, filled with about 35 iron balls the size of marbles that scattered like the pellets of a shotgun.

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.

Limber: A two-wheeled cart that carried one ammunition chest for an artillery piece. The artillery piece could be attached to the limber, which would allow both to be pulled by a team of horses. Also verb: The practice of attaching a piece of artillery to the limber that holds its ammunition.

Rifle Pit: Similar to what soldiers call a "foxhole" today. Rifle pits were trenches with earth mounded up at the end as protection from enemy fire. A soldier lay in the trench and fired from a prone position.

Emancipation: Freedom from slavery.