The Western Somali Liberation Front (WSLF) was a separatist rebel group fighting in eastern Ethiopia to create an independent state. It played a major role in the Ogaden War of 1977-78 assisting the invading Somali Army. Since the end of the Ethiopian Civil War, the WSLF was almost totally incorporated into the Western Somali Democratic Party.
Somali guerrilla activity in the Ogaden and in the Haud area east of Harar flared sporadically after Somalia gained its independence in 1960, but the guerrilla activity remained essentially a police concern until a border war erupted in 1964. When he seized power in Mogadishu in 1969, Siad Barre thwarted attempts at an understanding between Ethiopia and Somalia. He pledged to renew efforts to establish a "Greater Somalia" that would encompass about one-third of Ethiopia's territory. Encouraged by the breakdown of authority in Addis Ababa after the 1974 overthrow of Haile Selassie, Somalia provided equipment, as well as moral and organizational support to insurgent movements in the Ogaden and southern Ethiopia.
The WSLF was founded by a young captain called Yusuf Dheere Mohamed Sugaal (Yuusuf the tall man) who was educated and trained in Syria, after finishing high school in Hargeisa. Upon his return from Syria, Yusuf Dheere has created the "Ururka dhalinyara soomaali galbeed" or the Western Somali Youth Organisation. Yusuf Dheere, who was well connected and from a noble family, met the Somali president Siad Barre in 1973 after putting the Somali elders behind his plan, and convinced the Somali president to do something about the Ogaden region. So Siad Barre gave Yusuf Dheere 2 years to give diplomacy a chance and to prepare the Somali National Army, for it was still unproven. In the meanwhile, Yusuf Dheere was told to recruit about 1500 volunteers and was permitted rations for only 1500 people; in the space of a month, he recruited over 3000 soldiers, most of them were old fighters from all over the country.
Two years after the initial meeting, and after going through the UN and unsuccessful peace meeting with Emperor Haile Selassie, Yusuf Dheere was given the go ahead he wanted and was told to get control of at least 60% of the Ogaden region before the Somali army would involve itself in the fighting. The WSLF found its opportunity when the Derg overthrew Haile Selassie in 1974, and switched from the American support to the Soviet Union. Two years later, when the WSLF had control of most of the Ogaden, the first time since the Second world war that all Somalia was united with the exception of the NFD region in Kenya.
The WSLF was supported in its rebellion by the Somali Abo Liberation Front (SALF), whose sphere of operations was in the provinces of Bale, Sidamo, and Arsi, where it advocated union with Somalia or the creation of an independent state. Somalia equipped both groups with Soviet arms, and later with the Somali army. Both groups also received aid and training from various Arab and socialist states, including Cuba.
Although the Ethiopian army outnumbered the Somalis by at least 3 to 1, the Somali army had much more air-superiority then the Ethiopians and were much better equipped. However after the massive Soviet-support stopped and America did not accept the military support that Somali has requested, the WSLF was forced later to retreat to camps in Somalia proper after a massive Soviet-supported and Cuban-armed Ethiopian and Cubans soldiers pushed back the WSLF and the Somalian army.
The Somali government subsequently forbade the WSLF and its leaders to use its territory to launch attacks into Ethiopia. By 1989 the WSLF had ceased to be an effective guerrilla organization within Ethiopia. Siad Barre's decision to restrict the WSLF led the exile of Yusuf Dheere in 1989 and to the formation of a WSLF splinter group, the Ogaden National Liberation Front (ONLF), whose headquarters were in Kuwait. Elements of the ONLF slipped back into the Ogaden in 1988, where they still operate. However not every one was happy with the ONLF because of its name (Ogaden rather than Somali), therefore many of the original WSLF supporters formed the United Western Somali Front which also includes some former ONLF members.
Source: U.S. Library of Congress