To be overthrown in a millitary coup or (coup d'état ) means When an existing authority or government is suddenly and violently displaced by the military who usurps power from the existing government.
Some of the famous military coup witnessed in history include
----Napoleon Bonaparte who assumed the Consul for Life of France after a coup d'état.
------ The overthrow of King Idris in Libya by Muammar al-Gaddafi
----Military coup headed by Idi Amin in Uganda. etc
