On this day, ten years ago, the Fort Myer Military Community became Joint Base Myer-Henderson Hall. JBM-HH was one of twelve joint bases to be created as a result of the 2005 BRAC recommendations. Fort Myer had been the name of the post since 1881. Parts of Fort Myer were previously known as Fort Cass and Fort Whipple, two defensive positions constructed during the Civil War as part of the Washington defenses.