The Shan have been engaged in an independence struggle that has led to intermittent civil war within Burma for decades. Currently two main Shan armed insurgent forces operate within Shan State: the Shan State Army/Special Region 3 and Shan State Army/Restoration Council of Shan State. In 2005 the Shan State National Army (SSNA) was effectively abolished after its surrender to the Burmese government. Some SSNA units joined the SSA/RCSS, which has yet to sign any agreements, and is still engaged in guerrilla warfare against the Burmese Army.