The British subsequently decided to evacuate the 10,000 Indo-Europeans and European internees in the volatile Central Java interior. British detachments sent to the towns of Ambarawa and Magelang encountered strong Republican resistance and used air attacks against the Indonesians. Sukarno arranged a ceasefire on 2 November, but by late November fighting had resumed and the British withdrew to the coast. Republican attacks against Allied and alleged pro-Dutch civilians reached a peak in November and December, with 1,200 killed in Bandung as the "pemuda" returned to the offensive. In March 1946, departing Republicans responded to a British ultimatum for them to leave the city of Bandung by deliberately burning down much of the southern half of the city in what is popularly known in Indonesia as the "Bandung Sea of Fire". The last British troops left Indonesia in November 1946, but by this time 55,000 Dutch troops had landed in Java.