During the Battle of Fredericksburg, the famed Union Irish Brigade made a futile, but daring charge against an impregnable Confederate position at the Sunken Road. As a result, the unit lost approximately half its members. On December 10, 1995, the Charitable Irish Society of Boston donated to the park a drum used by this esteemed brigade. The drum was used by the 28th Massachusetts Infantry Regiment throughout the Civil War. At the conclusion of hostilities, it is believed that the drum was taken home to Boston by the unit's drummer, who then used it in a number of veteran's parades. Eventually it ended up in a bank vault in Boston. It was not until 1991 that it was again discovered. Luckily, for the park the Charitable Irish Society felt that the drum should be on display at Fredericksburg where it is now located.