Obersturmführer was a Nazi party paramilitary rank that was used in several Nazi organizations, such as the SA, SS, NSKK and the NSFK. Translated as “senior assault (or storm) leader”, the rank of Obersturmführer was first created in 1932 as the result of an expansion of the Sturmabteilung (SA) and the need for an additional rank in the officer corps. Obersturmführer also became an SS rank at that same time. David Niven's British sapper character wore a captured SS uniform with this insignia in the 1961 movie The Guns of Navarone.