It was a National Socialist terminology.
People who had too much pride in their cause, and in their countries sovereign duty. (Or Hitler's philosophy)
Main Entry: Na·zi
Pronunciation: \ˈnät-sē, ˈnat-\
Function: noun
Etymology: German, by shortening & alteration from Nationalsozialist, from national national + Sozialist socialist
Date: 1930
1 : a member of a German fascist party controlling Germany from 1933 to 1945 under Adolf Hitler 2 often not capitalized a : one who espouses the beliefs and policies of the German Nazis : fascist b : one who is likened to a German Nazi :
a harshly domineering, dictatorial, or intolerant person— nazi adjective often capitalized
— na·zi·fi·ca·tion \ˌnät-si-fə-ˈkā-shən, ˌnat-\ noun often capitalized
— na·zi·fy \ˈnät-si-ˌfī, ˈnat-\ transitive verb often capitalized