Brevet Major Augustus Plummer Davis (May 10, 1835 – May 21, 1899) was a Union Army officer during the American Civil War.

[1] At the age of 14 Davis left home and travelled to San Francisco as part of the 1849 California Gold Rush.

[1] In April 1862 he was detached from the 11th Maine and detailed as Provost Marshal of the division commanded by Major General Silas Casey.

[1] After the war, Davis joined Alexander Hays Post 3 of the Grand Army of the Republic in Pittsburgh.

[1] On January 14, 1880, he was elected as a Veteran Companion of the First Class of the Pennsylvania Commandery of the Military Order of the Loyal Legion of the United States (MOLLUS).

In addition to instilling discipline and patriotism, the SV was also intended to be a military reserve force which could be called on in time of war.

Shortly after his second marriage, Davis moved to Pittsburgh, Pennsylvania on the advice of his doctor to live in a drier climate.

Davis belonged to numerous American fraternal, patriotic, and veterans' organizations to include the Military Order of the Loyal Legion of the United States, General Society of the War of 1812, Grand Army of the Republic, Sons of Union Veterans of the Civil War, Knights of Pythias, Society of the Army of the Potomac, Society of the Army of the James, Union Veteran League, Sons of the American Revolution, and the Military Order of Foreign Wars.