On 1 August, VIII Corps became part of Lieutenant General George S. Patton's Third Army. On 4 August, Montgomery changed the invasion plan by sending a corps to occupy Brittany and push the German troops around the ports, while the rest of the Third Army continued east. Because of the large number of German forces south of Caen, Montgomery moved the British armor west and launched Operation Bluecoat from 30 July until 7 August to add to the attacks from the United States armies. This pushed the German forces to the west, allowing the launch of Operation Totalize south from Caen on 7 August.