On 28 May, Wavell gave his orders for Operation Battleaxe, an operation in three stages; the Axis forces were to be defeated on the frontier and the area of Halfaya, Sollum, Capuzzo and Sidi Aziez was to be secured. In the second phase, XIII Corps was to secure the area around Tobruk and El Adem, then the areas of Derna and Mechili were to be captured. The plan was based on intelligence information, which incorrectly indicated that of the German tank strength was at Tobruk, which would put the British at a decisive material advantage on the frontier. The attack was originally scheduled for 7 June, but was pushed back at the insistence of General O'Moore Creagh, whose squadrons did not receive their tanks until 9 June. The new date was 15 June, giving Creagh five days for additional training.