From the fall of 1943 through the spring of 1944 the battle for the night skies over Germany swung to the night fighters. Harris hoped to end the war by destroying Berlin. It was his last opportunity to do so before the Allied land forces would intervene in what could be a very costly land battle. Throughout that winter Harris attempted to win the Battle of Berlin. During this period Jabs was frustrated with his inability to locate and track any bombers, and he reported no victories during this time. The Nuremberg raid on 30/31 March 1944 was the last mission flown in the battle for Berlin. On 1 April Bomber Command was placed under the control of Eisenhower and SHAEF, and the force was turned to France to begin air preparations for the invasion.