medvol
n.— «The enlisted soldiers were told they were volunteering for a program that was “completely safe” so safe that in fact the Army would not be doing any type of medical follow up. That we were testing equipment and uniforms for the battlefields of the future. None of the shady parts of the CIA operation were ever explained to the 7120 men from 1955 thru 1975 that volunteered for what was known as “medvols.”» —“The CIA ‘Family Jewels’ story is personal to me” by testvet6778 Daily Kos June 23, 2007. (source: Double-Tongued Dictionary)