MacMillan-Birtles Pipe Band is part of the MacMillan United Pipe Bands organisation in the United States. The group sits within a multi-band structure that includes MacMillan in Grade 2, MacMillan-Birtles in Grade 3, and MacMillan-Dunn in Grade 4. The organisation describes itself as committed to high-quality piping and drumming across several competitive levels.

MacMillan-Birtles is currently described by the organisation as a strong Grade 3 band, with experience competing in the United States, Canada and Scotland. It appears in Eastern United States Pipe Band Association records under Rockville, Maryland, with Chris Hamilton listed as Pipe Major.

The band is also sometimes listed as MacMillan-Birtles Memorial Pipe Band, including at the American Pipe Band Championships in Norfolk, Virginia, where it competed in the Grade 3 event.