All wars and conflicts

Yom Kippur War

8 countries took part.

Read about Yom Kippur War on Wikipedia

Country	Years
Cuba	1973 to 1973
Egypt	1973 to 1973
Iraq	1973 to 1973
Israel	1973 to 1973
Jordan	1973 to 1973
Morocco	1973 to 1973
Saudi Arabia	1973 to 1973
Syria	1973 to 1973