 Complete the following phrase:  In May, before Cascade had become fully operational, Rommel defeated the British Army in Libya. Auchinleck rallied his forces at El Alamein and asked Clarke to draft plans for delaying the Axis advance, giving the Allies time to withdraw. Operation Sentinel was designed to convince Rommel, using camouflage, fakery and radio deception, that substantial British armour sat between him and the retreating Eighth Army. In spite of his 