On 1 August 1943, Radusch was appointed "Geschwaderkommodore" (wing commande) of "Nachtjagdgeschwader" 5 (NJG 5—5th Night Fighter Wing). On the night of 17/18 August, Bomber Command launched Operation Hydra, the attack on a German scientific research centre at Peenemünde. Defending against this attack, Radusch claimed three bombers shot down near Peenemünde, taking his total to 25 nocturnal aerial victories. For this, he was awarded the Knight's Cross of the Iron Cross () on 29 August.