events

Constantine II of Greece attempts an unsuccessful counter-coup against the Regime of the Colonels.

Historical image related to Constantine II of Greece attempts an unsuccessful counter-coup against the Regime of the Colonels. from December 13, 1967

Constantine II of Greece

King of Greece from 1964 to 1973

Constantine II was the last King of Greece, reigning from 6 March 1964 until the abolition of the Greek monarchy on 1 June 1973.
Source: Wikipedia (CC BY-SA)

Greek junta

Military rulers of Greece, 1967–1974

The Greek junta or Regime of the Colonels was a right-wing military junta that ruled Greece from 1967 to 1974. On 21 April 1967, a group of colonels overthrew the caretaker government a month before scheduled elections which Georgios Papandreou's Centre Union was favoured to win.
Source: Wikipedia (CC BY-SA)