The 1st Signal Brigade ("First to Communicate")[1] is a military communications brigade of the United States Army subordinate to the Eighth United States Army and 311th Signal Command in Hawaii, and located at Camp Humphreys in South Korea.The 1st Signal Brigade was activated on 1 April 1966 in the Republic of Vietnam.[2] The brigade's mission in Vietnam was to originate, install, operate, and maintain a complex communication system that fused tactical and strategic communications in Southeast Asia under a single, unified command. The formation of the brigade brought together three signal groups that were already in South Vietnam.