more at World War II espionage training film for OSS (Office of Strategic Services, the precursor of the CIA) operatives. At the opening, a .\r
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more at NEW VERSION in one piece instead of multiple parts: .\r
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more at Office of Strategic Services. Field Photographic Branch. Film Report: Excerpts compiled by OSS to try .\r
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more at Military Film Report: On the German invasion of Crete during World War II and its eventual fall .