The 358th Army Security Agency (ASA) Company was an intelligence unit of the United States Army, initially constituted during the Cold War era. Stationed in various locations in Europe and Asia, its primary mission was signals intelligence (SIGINT), including intercepting and analyzing enemy communications. The unit played a crucial role in gathering intelligence during tense periods, such as the Vietnam War and the broader U.S.-Soviet rivalry. Over time, as military intelligence structures evolved, the 358th ASA Company was eventually inactivated or reorganized under new intelligence commands.