Since qualified intelligence interrogation personnel are not normally assigned or attached below brigade
level except for specified operations, prisoners are not formally interrogated at command below brigade
level. Brief initial tactical interrogation is encouraged at the lowest level of command in order to
determine information of immediate tactical value. Tactical interrogation of selected prisoners takes
place at brigade and division with a detailed interrogation at field army. Normally, corps is bypassed in
a chain of prisoner evacuations. A prisoner collection point may be established at corps for the
temporary retention of selected prisoners for special interrogation.
3. Local Civilians.
The term "civilian" includes local inhabitants, line crossers, tourists, missionaries, displaced persons,
and repatriates. Civilians who have been within enemy controlled areas may be valuable sources of
information. Many line crossers, and subversion, espionage, and sabotage agents, may also be among
these. Procedures should be established which ensure early detection of these civilians and immediate
notification of counterintelligence personnel. Generally, the longer the delay in questioning, the less
valid the information obtained.
4. Recovered Military Personnel.
Recovered U.S. military personnel are information sources on the operational area and enemy
dispositions and activities. U.S. escapees and evaders are also sources of information on successful
evasion techniques. Debriefing of recovered U.S. military personnel is conducted by intelligence
personnel. Within limits, debriefing of personnel at division and lower levels is usually limited to
obtaining information of immediate tactical value.
5. Military Units and Agencies.
Every company-size unit is designated an information source in the NBC Warning and Reporting
System. These units gather and submit information in the form of NBC 1 and NBC 4 Reports. They
also forward material collected by individuals of the unit.
6. Units in Contact.
Units in contact are usually the first to encounter new or modified foreign materiel, often with related
operating instructions or other accompanying technical documents. The intelligence officer at each
level must ensure that captured equipment or documents are recovered for technical intelligence
exploitation. Vital technical intelligence material,