In 1967 a group of 4 colonels of the Greek army took over Greece through a military control. The colonels got together and formed a plan, which involved all Generals, politicians, and any other people who they thought were a threat. Then they declared that the country was under marshall law. After that George Papadopolous appointed himself prime minister and regent himself to the crown. George Papadopolous only ruled for a year (1973) before he was overthrown. He was overthrown by his own co-conspirator Dimitrios Loannidis. Eight months later Andreas was released from prison and he ruled Greece again. In 1975, Greece was officially a Parliamentary Republic.