The fort was built to serve as a stronghold against attacks by Native Americans and was used during the French and Indian War.

Modifications in the early-19th century raised the height of the fort building adding a second story loft and a wood shingle roof.

[1] In 2019, the Maryland Historical Trust removed a sign at Fort Garrison after officials received complaints over the use of the term "hostile Indians".

The language, dating back to 1934, was removed on the basis of bias against Native Americans.

This article about a Registered Historic Place in Baltimore County, Maryland is a stub.