The major revolt began on September 20, 1260. It was triggered by the Lithuanian and Samogitian military victory against the joint forces of the Livonian Order and Teutonic Knights in the Battle of Durbe. As the uprising was spreading through Prussian lands, each clan chose a leader: the Sambians were led by Glande, the Natangians by Herkus Monte, the Bartians by Diwanus, the Warmians by Glappe, the Pogesanians by Auktume. One clan that did not join the uprising was the Pomesanians. The uprising was also supported by Skalmantas, leader of the Sudovians. However, there was no one leader to coordinate efforts of these different forces. Herkus Monte, who was educated in Germany, became the best known and most successful of the leaders, but he commanded only his Natangians.