August Incident (Korean: 8월 종파 사건), officially coined as the "Second Arduous March", was an attempted removal of Kim Il-sung from power by leading North Korean figures from the Soviet-Korean faction and the Yan'an faction, with support from the Soviet Union and China, at the 2nd Plenary Session of the 3rd Central Committee of the Workers' Party of Korea (WPK) in 1956. The attempt to remove Kim failed and the participants were arrested and later executed. Through this political struggle, Kim Il-sung quashed all opposition to him within the central party leadership.