Zimbabwe
From Tardis Wiki, the free Doctor Who reference
Zimbabwe was a nation of Earth.
Armand Lemieux was an ex-mercenary who was in Zimbabwe during a war before 2040. (PROSE: Thinking Warrior [+]Loading...["Thinking Warrior (short story)"])
Behind the scenes
The Zambezi valley was mentioned in the novelisation of Battlefield.
Rhodesia was the name of the British colony, and later unrecognised independent state, that made up modern day Zimbabwe prior to 1980.