A fast military advance, from the German "lightning war". Utilizing the frightening weight and speed of the Panzer divisions, the German forces would penetrate enemy lines and head for objectives in the rear. Thus shattering supply lines and causing both physical and psychological damage to the enemy. German general Heinz Guderian organized the self-contained Panzer Divisions that carried out these maneuvers. They were often supported by the deadly Junkers 87 Stuka dive bombers.
Also a short lived 80s heavy metal band, whose eponymous anthem was covered by Metallica on their album Garage Inc.