of Belgium September 6, 1940 (Friday) The unpopular King Carol II of Romania abdicated in favour of son Michael. Ion Antonescu became the leader of Romania. On September 14 he would take for himself the title of Conducător. The Germans bombed Grantham, the headquarters of No. 5 Group RAF. Grantham would be bombed eleven more times through the end of the year and for a while had the distinction of being the most frequently bombed town in all of England. September 7, 1940 (Saturday) The Blitz began when the Luftwaffe shifted its focus from bombing British airfields and aircraft factories to conducting terror raids on London and other major cities in response to British bombing of Berlin. This proved to be a mistake, as it would give RAF Fighter Command much-needed time to regroup. The Treaty of Craiova was signed between Bulgaria and Romania. The President of Paraguay, José Félix Estigarribia, dies in a plane crash. Édouard Daladier, Paul Reynaud and Maurice Gamelin were arrested without charge and interned in the Château de Chazeron. Born: Abdurrahman Wahid, 4th President of Indonesia, in Jombang, East Java, Dutch East Indies (d. 2009) September 8, 1940 (Sunday) Italian Field Marshal Rodolfo Graziani agreed to begin an offensive against the British in North Africa the following day, after Benito Mussolini threatened to dismiss him if he did not. Jayachamarajendra Wadiyar was crowned Maharaja of the Kingdom of Mysore. September 9, 1940 (Monday) The Italian invasion of Egypt began. The Italian Air Force bombed Tel Aviv in Mandatory Palestine, killing 137. 93 were killed in the Treznea massacre that took place in Treznea, Sălaj during the handover of Northern Transylvania from Romania to Hungary. September 10, 1940 (Tuesday) A German bomb exploded at Buckingham Palace for the first time. The Corpo Aereo Italiano was formed to participate in the Battle of Britain. German submarine U-105 was commissioned. Born: David Mann, graphic artist, in Kansas City, Missouri (d. 2004) Died: Yamaya Tanin, 74, Japanese admiral September 11, 1940 (Wednesday) The Nederlandsche SS (Dutch SS) was formed. Winston Churchill gave a radio address saying that a German invasion of Britain could not be delayed for much longer if it was to be tried at all, so "we must regard the next week or so as a very important week for us in our history. It ranks with the days when the Spanish Armada was approaching the Channel