George S Patton said that "Nobody ever defended anything successfully, there is only attack and attack and attack some more." What doe this mean?
It means that it's difficult to imagine that armies that just defend, without attacking, will win any war. Of course Patton was speaking from the context of having a large materiel superiority, and having numerical manpower advantages. But, stepping back, the quote was meant to instill the spirit of aggression in his armies and perhaps also the home front.