Siad Barre
In 1981, three groups of Majertin anti-Siad Barre émigrés in Aden (then part of South Yemen) formed the Somali Salvation Democratic Front, with the purpose of fighting alongside Ethiopian forces in the Ogaden War against the Siad Barre regime. The invasion was withdrawn in 1982 when the United States sent emergency military aid to Somalia. The organization became divided increasingly along clan lines, leading to the imprisonment of many leading members including Abdullahi Yusuf Ahmed, and the defection of many to the Siad Barre regime.