Under Patch, the Seventh Army invaded southern France in Operation Dragoon on 15 August 1944. Patch–promoted to the three-star rank of lieutenant general three days later–then led the Seventh Army in a fast offensive up the Rhône valley. On 9 September 1944, near Dijon, France, it met up with the Third Army, under Lieutenant General George S. Patton, which had driven east from Normandy. The Seventh Army came under the command of the 6th Army Group, commanded by Lieutenant General Jacob L. Devers. One of Patch's corps commanders, Major General Truscott, who commanded the VI Corps, which came under command of Patch's Seventh Army, wrote of him, "I came to regard him as a man of outstanding integrity, a courageous and competent leader, and an unselfish comrade-in-arms."