Presidio Garrison

Presidio Garrison traces its roots to the late 18th century, when Spanish colonial forces established a fortified post at the Presidio of San Francisco in 1776 to defend the northern frontier of New Spain. Over the centuries, the garrison evolved under Mexican and later American control, playing significant roles during the Mexican-American War and the American Civil War as a key coastal defense installation. In the 20th century, Presidio Garrison oversaw logistics and training operations during both World Wars and served as headquarters for the Sixth U.S. Army. The unit's legacy continues today through its historical contributions to national defense and military heritage.