Great Britain and Argentina, but the war began and ended in 1982.
When and what countries
The UK
Argentina and Great Britain
Argentina in the Falklands thusly named the Falklands War
Falklands Islands / South Atlantic Islands
The Falklands War of 1982
There were twenty-two countries that never fought the British. Some of the names of the countries that did not fight the British are Honduras, Iran, Iraq, and Ireland.
They fought the Germans, Japanese, and Italy
Two were awarded during the Falklands War.
In which war?
France an Britain