Allied invasion of Italy two hours traveling from the transports to the landing beaches. On the German side, Albrecht von Kesselring lacked the strength to push the Salerno landing back, and was refused two panzer divisions from northern Italy to assist him. Operation Avalanche was planned under the name Top Hat and supported by a deception plan, Operation Boardman, a false threat of an Allied invasion of the Balkans. In mid-August, the Germans had activated Army Group B ("Heeresgruppe B") under Erwin Rommel with responsibility for German troops in Italy as far south as Pisa. Army Command South ("OB Süd") under Albert Kesselring continued
Allied invasion of Sicily opportunistic and irrelevant, but were persuaded to agree to a Sicilian invasion on the grounds of the great savings to Allied shipping that would result from the opening of the Mediterranean by the removal of Axis air and naval forces from the island. The Combined Chiefs of Staff appointed General Eisenhower as C-in-C of the Allied Expeditionary Force, General Alexander as Deputy C-in-C with responsibility for detailed planning and execution of the operation, Admiral Cunningham as Naval Commander, and Air Chief Marshal Tedder as Air Commander. The outline plan given to Eisenhower by the Chiefs of Staff involved dispersed landings