First Sudanese Civil War

The First Sudanese Civil War (also known as the Anyanya Rebellion or Anyanya I, after the name of the rebels) was a conflict from 1955 to 1972 between the northern part of Sudan and the southern Sudan region that demanded representation and more regional autonomy. Half a million people died over the 17 years of war, which may be divided into three stages: initial guerrilla war, Anyanya, and South Sudan Liberation Movement.

However, the agreement that ended the First Sudanese Civil War's fighting in 1972 failed to completely dispel the tensions that had originally caused it, leading to a reigniting of the north-south conflict during the Second Sudanese Civil War, which lasted from 1983 to 2005. The period between 1955 and 2005 is thus sometimes considered to be a single conflict with an eleven-year ceasefire that separates two violent phases.

Origins of the conflict
Until 1946, the British government, in collaboration with the Egyptian government (under a condominium governing arrangement) administered south Sudan and north Sudan as separate regions. At this time, the two areas were merged into a single administrative region as part of British strategy in the Middle East.

This act was taken without consultation with southerners, who feared being subsumed by the political power of the larger north. Southern Sudan is inhabited primarily by Christians and animists and considers itself culturally sub-Saharan, while most of the north is inhabited by Muslims who were culturally Arabic.

After the February 1953 agreement by the United Kingdom and Egypt to grant independence to Sudan, the internal tensions over the nature of the relationship of north to south were heightened. Matters reached a head as the 1 January 1956 independence day approached, as it appeared that northern leaders were backing away from commitments to create a federal government that would give the south substantial autonomy.

Course of the war
On 18 August 1955, members of the British-administered Sudan Defence Force Equatorial Corps mutinied in Torit, and in the following days in Juba, Yei, and Maridi. The immediate causes of the mutiny were a trial of a southern member of the national assembly and an allegedly false telegram urging northern administrators in the South to oppress Southerners. The mutinies were suppressed, though survivors fled the towns and began an uncoordinated insurgency in rural areas. Poorly armed and ill-organized, they were little threat to the outgoing colonial power or the newly formed Sudanese government. O'Ballance, writing in 1977, says that the 'period from 1955 to 1963 was simply one of guerilla survival, scarcely removed from banditry, and that it was successful due to a score or so of former southern army officers and warrant officers, and a small number of non-commissioned officers.'

However, the insurgents gradually developed into a secessionist movement composed of the 1955 mutineers and southern students. These groups formed the Anyanya guerrilla army. (Anyanya is also known as Anyanya 1 in comparison to Anyanya 2, began with the 1974 mutiny of the military garrison in Akobo.) Starting from Equatoria, between 1963 and 1969 Anyanya spread throughout the other two southern provinces: Upper Nile and Bahr al Ghazal. However, the separatist movement was crippled by internal ethnic divisions. O'Ballance writes that one of the Sudanese army's four infantry brigades had been stationed in Equatoria Province since 1955, being periodically reinforced as required.

The government was unable to take advantage of rebel weaknesses because of their own factionalism and instability. The first independent government of Sudan, led by Prime Minister Ismail al-Azhari, was quickly replaced by a stalemated coalition of various conservative forces, which was in turn overthrown in the coup d'état of Chief of Staff Lt. Gen. Ibrahim Abboud in 1958. Resentment at the military government led to a wave of popular protests that led to the creation of an interim government in October 1964.

These protests were the first appearance of Islamist Hassan al-Turabi, who was then a student leader. Between 1966 and 1969, a series of Islamist-dominated administrations proved unable to deal with the variety of ethnic, economic and conflict problems afflicting the country. After a second military coup on 25 May 1969, Col. Gaafar Nimeiry became Prime Minister and promptly outlawed political parties.

In-fighting between Marxist and non-Marxist factions in the ruling military class led to another coup in July 1971 and a short-lived administration by the Sudanese Communist Party before anti-Communist factions put Nimeiry back in control of the country. That same year, German national Rolf Steiner, who had been clandestinely advising the rebels, was captured in Kampala, Uganda and deported to Khartoum, where he was put on trial for his anti-government activities. Originally sentenced to death, he would serve three years in prison before being released following pressure from the West German Government.

In 1971, former army lieutenant Joseph Lagu gathered all the guerilla bands under his Southern Sudan Liberation Movement (SSLM). This was the first time in the history of the war that the separatist movement had a unified command structure to fulfill the objectives of secession and the formation of an independent state in South Sudan. It was also the first organization that could claim to speak for, and negotiate on behalf of, the entire south. Mediation between the World Council of Churches (WCC) and the All Africa Conference of Churches (AACC), both of which spent years building up trust with the two combatants, eventually led to the Addis Ababa Agreement of March 1972 ending the conflict. In exchange for ending their armed uprising, southerners were granted a single southern administrative region with various defined powers.

Effects of the war
Five hundred thousand people, of which only one in five was considered an armed combatant, were killed in the seventeen years of war and hundreds of thousands more were forced to leave their homes. The Addis Ababa Agreement proved to be only temporary respite. Infringements by the north led to increased unrest in the south starting in the mid-1970s, leading to the 1983 army mutiny that sparked the Second Sudanese Civil War.