VI Corps, with its experience of amphibious landings at Salerno, was chosen for the assault and withdrawn from the line, replaced by the French Expeditionary Corps. They made a second attempt to capture Monte Cassino in conjunction with the amphibious assault by VI Corps, which again failed. VI Corps landed at Anzio, unopposed, on 22 January 1944 in Operation Shingle, and suffered many of the same problems as had been seen at Salerno. A perceived lack of initiative on the part of the commander, Major General Lucas, combined with worries about the Germans catching VI Corps off balance if it advanced too far inland resulted in the beachhead being bottled up. The Germans launched a series of attacks and counterattacks, with both sides sustaining heavy losses, and nearly breached the last beachhead defences before again being driven off by heavy naval and air support. The fault, however, ""was not due to Lucas's incompetence; it was due instead to wishful thinking, faulty operational planning, and the German army's ability to respond forcefully and aggressively.""