A drum major or Field Commander is the leader of a marching band, drum and bugle corps, or pipe band, usually positioned at the head of the band or corps. The drum major, who is often dressed in more ornate clothing than the rest of the band or corps, is responsible for providing commands to the ensemble, and leads them while marching, and directs them what to play, when to play, and what time to keep. The commands may be given either verbally, through hand gestures, using a whistle or a baton, or with a mace in the military. In modern-day high school and college marching bands, drum majors are responsible for leading the practices and performances of the band.
In addition, they serve as the liaison between the band director and the band. Essentially a drum major is the leader that keeps the rhythm and beat of time with the use of its baton or other forms of time keeping such as conducting. The drum major often holds the responsibility to keep the band organized and structured.
The position of drum major originated in the British Army with the Corps of Drums in 1650. Military groups performed mostly duty calls and battle signals during that period, and a fife and drum corps, directed by the drum major, would use short pieces to communicate to field units. With the arrival of military concert bands and pipe bands around the 18th century, the position of the drum major was adapted to those ensembles.
Traditionally, a military drum major was responsible for:
The drum major was also given duties in the battalion at several points in history, which included the administering of military justice (flogging) to any member of the battalion, and collecting the battalion's post.
In addition to the duties above, the British Army also included a royal appointment of Drum Major General, whose duties included inspecting all other Field Music as well as (per The Drummer's Handbook) granting drummers licenses without which, one would not be recognized as a drummer. This position faded in the 18th century.