FM 34-52 Intelligence Interrogation
The US Army Field Manual on Interrogation, sometimes known by the military nomenclature FM 34-52, is a 177-page manual describing to military interrogators how to conduct effective interrogations while conforming with US and international law. It has been replaced by FM 2-22.3 Human Intelligence Collector Operations.
Source: Wikipedia — FM 34-52 Intelligence Interrogation (CC BY-SA 4.0)