Georgios Papadopoulos (; Greek: Γεώργιος Παπαδόπουλος [ʝeˈorʝi.os papaˈðopulos]; 5 May 1919 – 27 June 1999) was a Greek military officer and political leader who ruled Greece as a military dictator from 1967 to 1973. He joined the Hellenic Army during World War II and resisted the 1940 Italian invasion, but later became an active Axis collaborator with the Security Battalions. He remained in the army after the war and rose to the rank of colonel. In April 1967, Papadopoulos and a group of other mid-level army officers overthrew the democratic government and established a military junta that lasted until 1974. Assuming dictatorial powers, he led an authoritarian, anti-communist and ultranationalist regime which eventually ended the Greek monarchy and established a republic, with himself as president. In 1973, he was overthrown and arrested by his co-conspirator Dimitrios Ioannidis. After the Metapolitefsi which restored democracy in 1974, Papadopoulos was tried for his part in the crimes of the junta, and spent the remainder of his life in prison.