Mohammed Said Hirsi Morgan
A former army commander and son-in-law of Siad Barre, he became known as the "Butcher of Hargeisa" in the late 1980s when he conducted military operations against Somali National Movement (SNM) rebels in northern Somalia.
Hussein Mohammed Aideed
He is a former US marine and son of the late General Mohamed Farah Aideed - the warlord who helped to remove President Siad Barre from power, and then fought US forces in Mogadishu in 1993.
His son - Hussein Aideed - arrived in Somalia with the Americans but then left the US military and became a local militia leader.