Classic drum and bugle corps are musical ensembles that descended from military bugle and drum units returning from World War I and succeeding wars. Traditionally, drum and bugle corps served as signaling units as early as before the American Civil War, with these signaling units having descended in some fashion from ancient drum and fife corps. With the advent of the radio, bugle signaling units became obsolete and surplus equipment was sold to veteran organizations. These organizations formed drum and bugle corps of civilians and veterans, and the corps performed in community events and local celebrations. Over time, rivalries between corps emerged and the competitive drum and bugle corps circuit evolved.

The United States Marine Drum & Bugle Corps is the drum and bugle corps of the United States Marine Corps. The D&B is now the only active duty drum and bugle corps in the United States Armed Forces. One of many United States military bands, the United States Marine Drum & Bugle Corps usually consists of about 70 active-duty Marines dressed in ceremonial red and white uniforms. The D&B performs martial and popular music.