In the years following Indonesian independence, Suharto served in the Indonesian National Army, primarily in Java. In 1950, as a colonel, he led the Garuda Brigade in suppressing the Makassar Uprising, a rebellion of former colonial soldiers who supported the Dutch-established State of East Indonesia and its federal entity, the United States of Indonesia. During his year in Makassar, Suharto became acquainted with his neighbours, the Habibie family, whose eldest son BJ Habibie was later Suharto's vice-president, and went on to succeed him as president. In 1951-1952, Suharto led his troops in defeating the Islamic-inspired rebellion of Battalion 426 in the Klaten area of Central Java. Appointed to lead four battalions in early 1953, he organised their participation in battling Darul Islam insurgents in northwestern Central Java and anti-bandit operations in the Mount Merapi area. He also sought to stem leftist sympathies amongst his troops. His experience in this period left Suharto with a deep distaste for both Islamic and communist radicalism.