Hello, first time user here. Looking into German aircraft classifications. Reading a book, in German, "Luftkrieg 1939-1945" by Janusz Piekalkiewics. Find numerous references to Schlachtflugzeug & Zerstorer, anybody know what these terms refer to? These are in addition to the more common tems i.e. Jager (fighter, pursuit), Bomber, Aufklarer (reconnaissance) etc. Greatly appreciate any assistance. thanks in advance.