Circa 1900, a number of German families from southeastern Texas moved to the vicinity and settled along the Double Mountain Fork Brazos River.

Spielhagen laid out a town site two miles southeast of the present-day location and named it Brandenburg.

The Swenson Land and Cattle Company provided a town site two miles northwest of the Brandenburg settlement.

A mercantile store, a gin, post office, and a one room school house served the community.

The development of oil resources in Stonewall County during the late 1950s and early 1960s caused a brief economic Boom in Old Glory.

On July 1, 1985, the areas once served by Old Glory ISD were annexed into the Aspermont Independent School District.