Abwehr
The Abwehr (pronounced [ˈapveːɐ̯]; German for "resistance" or "defence", though the word usually means "counterintelligence" in a military context) was the German military-intelligence service for the Reichswehr and the Wehrmacht from 1920 to 1944. Although the 1919 Treaty of Versailles prohibited the Weimar Republic from establishing an intelligence organization of their own, they formed an espionage group in 1920 within the Ministry of Defence, calling it the Abwehr.