operation `` hurricane '' was a 24-hour bombing Attack operation to `` demonstrate to the enemy in germany generally the overwhelming superiority of the allied air forces in this theatre '' ( in the directive to harris aco raf bomber command ) and `` cause mass panic and in the ruhr , disrupt frontline communications and demonstrate the futility of resistance '' ( in the words of the official raf history ) .

With the battles in the south near Kharkov and , later , Kursk using Using reinforcements for both sides , the frontline near Leningrad stabilised Cause_change_of_strength until July 1943 .