What is Gefechtsverband?

Gefechtsverband meaning in German military terminology / glossary / dictionary is:
defensive aerial tactic employed against USAAF heavy bombers when Zerstörer twin-engined heavy fighters had proven too vulnerable to Allied single-engined fighters ; used heavily armed Fw 190As as bomber destroyers in place of the slower Zerstörer aircraft, with Bf 109Gs for escort.


reference: Wikipedia: Glossary of German military terms