from Wikinfo, an internet encyclopedia
Concentration camps rose to notoriety during their use in World War II by Germany. The Nazi regime nominally maintained both kinds of concentration camps, work camps and extermination camps. The distinction between the two, in practice, was very small. Prisoners in Nazi work camps could expect to be worked to death in short order, while prisoners in extermination camps usually died sooner in gas chambers or in other ways. Guards were known to engage in target practice, using their prisoners as targets.
Webmaster note: I have dated this October 12, 2004, because this is the day I found it. There is no date on the webpage cited above.