because of the steep gradient and difficult hairpin bends. German drive on Athens After abandoning the Thermopylae area, the British rearguard withdrew to an improvised switch position south of Thebes, where they erected a last obstacle in front of Athens. The motorcycle battalion of the 2nd Panzer Division, which had crossed to the island of Euboea to seize the port of Chalcis and had subsequently returned to the mainland, was given the mission of outflanking the British rearguard. The motorcycle troops encountered only slight resistance and on the morning of 27 April 1941, the first Germans entered Athens, followed by armoured cars, tanks and infantry. They captured intact large quantities of petroleum, oil and lubricants ("POL"), several thousand tons of ammunition, ten trucks loaded with sugar and ten truckloads of other rations in addition to various other equipment, weapons and medical supplies. The people of Athens had been expecting the Germans for several days and confined themselves to their homes with their windows shut. The previous night, Athens Radio had made the following announcement: The Germans drove straight to the Acropolis and raised the Nazi flag. According to the most popular account of the events, the Evzone soldier on guard duty, Konstantinos Koukidis, took down the Greek flag, refusing to hand it to the invaders, wrapped himself in it, and jumped off the Acropolis. Whether the story was true or not, many Greeks believed it and viewed the soldier as a martyr. Evacuation of Empire forces General Archibald Wavell, the commander of British Army forces in the Middle East, when in Greece from 11 to 13 April had warned Wilson that he must expect no reinforcements and had authorised Major General Freddie de Guingand to discuss evacuation plans with certain responsible officers. Nevertheless, the British could not at this stage adopt or even mention this course of action; the suggestion had to come from the Greek Government. The following day, Papagos made the first move when he suggested to Wilson that W Force be withdrawn. Wilson informed Middle East Headquarters and on 17 April, Rear-Admiral Baillie-Grohman was sent to Greece to prepare for the evacuation. That day Wilson hastened to Athens where he attended a conference with the King, Papagos, d'Albiac and Rear admiral Charles Edward Turle. In the evening, after telling the King that he felt he had failed him in the task entrusted to him, Prime Minister Koryzis