On 18 April 1906 , just after the 1906 San Francisco earthquake , recently retired Captain Edward Ord of the 22nd Infantry Regiment was appointed a Special Police Officer by San Francisco Mayor Eugene Schmitz and liasioned with Major General Adolphus Greely for relief work with the 22nd Infantry Regiment and other military units involved in the emergency . Ord later wrote a long letter to his mother on 20 April regarding Schmitz ' " shoot-to-kill " order and some " despicable " behavior of certain soldiers of his former 22nd Infantry Regiment from the Presidio who were looting . At the same time , Ord also made it clear that the majority of soldiers served the community well
1906 San Francisco earthquake
1906 San Francisco earthquake
22nd Infantry Regiment (United States)