The Ilinden-Preobrazhenie Uprising or simply the Ilinden Uprising of August 1903 was an organized revolt against the Ottoman Empire, which was prepared and carried out by the Secret Macedonian-Adrianople Revolutionary Organization. The British researcher of the Balkans H. N. Brailsford wrote in his book Macedonia: Its Races and Their Future: "The moment for which the Bulgarian population had been preparing for ten years arrived on the festival of the Prophet Elijah's day the evening of Sunday, August the 2nd, 1903." At the same time on the other end of the SMARO s territory, in Eastern Thrace, the leaders of the Adrianople Vilayet comitajis, had unanimously agreed that they were not ready for uprising , but of a feeling of solidarity, had voted for a rising. So in Strandzha the rising had begun on the Feast of the Transfiguration, August 19, 1903. The rebellion in Macedonia affected most of the central and southwestern parts of the Monastir Vilayet receiving the support mainly of the local Bulgarian peasants and to some extent of the Aromanian population of the region.