 Complete the following phrase:  In the late 1960s, Kiir joined the Anyanya battalion in the First Sudanese Civil War. By the time of the 1972 Addis Ababa Agreement, he was a low-ranking officer. In 1983, when Dr John Garang joined an army mutiny he had been sent to put down, Kiir and other Southern leaders joined the rebel Sudan Peoples Liberation Movement SPLM in the 