North Yemen Civil War

The North Yemen Civil War begun in 1962 and ended in 1970. It took place between the North Yemen republican forces and the Mutawakkilite Kingdom of Yemen. The Royalists received support from Saudi Arabia and Jordan while the Republicans received support from Egypt and the Soviet Union. Saudi Arabia helped to hire hundreds of European mercenaries and at times the Royalists used local tribesmen. The Republicans also used about 55,000 Egyptian troops.
The Royalists were commanded by Imam Al-Badr of the Mutawakkilite Kingdom of Yemen, Faisal ibn Abdelaziz from the Kingdom of Saudi Arabia and Hussein bin Talal from the Kingdom of Jordan.

The Republican commanders were Gamal Abdel Nasser and Abdel Hakim Amer from Egypt and Abdullah as-Sallal from the North Yemen republic. During the conflict over 50,000 of Egypt's troops were tied down in Yemen, which proved to be a disadvantage to Egypt during the Six-day war in 1967. The war concluded when the Republican forces won, and this resulted in transformation of the Mutawakkilite Kingdom of Yemen into North Yemen. Over 100,000 died on both sides during the conflict.