The Separate Operational Purpose Division or ODON, formerly called OMSDON, is a rapid deployment internal security division of the Internal Troops of the Ministry of Internal Affairs of the USSR and then the Russian Federation, currently part of the National Guard Forces Command of the Russian Federation. ODON is an initialism for Отдельная дивизия оперативного назначения.

Felix Edmundovich Dzerzhinsky, nicknamed "Iron Felix", was a Bolshevik revolutionary and politician. From 1917 until his death in 1926, he led the first two Soviet secret police organizations, the Cheka and the OGPU, establishing state security organs for the post-revolutionary Soviet regime. He was one of the architects of the Red Terror and de-Cossackization.