Oberleutnant
/ˌəʊbəˈlɔɪtnənt/Military
noun
In Germany, Austria, and Switzerland: a military title or rank equivalent to a British lieutenant and U.S. first lieutenant, (in the navy) to a Royal Navy sub-lieutenant, and (in the air force) to a Royal Air Force flying officer; a person of this rank.
Origin
Mid 19th century; earliest use found in George Meredith (1828–1909), novelist and poet. From German Oberleutnant from ober upper + Leutnant second lieutenant.