پرش به ناوبری پرش به جستجو
- Holmes, ed. (2009). The Oxford Companion to Military History, p. 2.
- Originally formed in 1866, the early manifestation of the Prussian Abwehr predates the modern German state and was created to collect intelligence information for the Prussian government during a war with neighboring Austria. See: Lerner & Lerner, eds. (2004). Encyclopedia of Espionage, Intelligence, and Security, vol. 1, A-E, p. 2.